Uses of Class
weka.core.Instances

Packages that use Instances

Package	Description
weka.associations
weka.attributeSelection
weka.classifiers
weka.classifiers.bayes
weka.classifiers.bayes.net
weka.classifiers.bayes.net.search
weka.classifiers.bayes.net.search.fixed
weka.classifiers.bayes.net.search.global
weka.classifiers.bayes.net.search.local
weka.classifiers.evaluation
weka.classifiers.evaluation.output.prediction
weka.classifiers.functions
weka.classifiers.functions.supportVector
weka.classifiers.lazy
weka.classifiers.lazy.kstar
weka.classifiers.meta
weka.classifiers.misc
weka.classifiers.pmml.consumer
weka.classifiers.pmml.producer
weka.classifiers.rules
weka.classifiers.rules.part
weka.classifiers.trees
weka.classifiers.trees.ht
weka.classifiers.trees.j48
weka.classifiers.trees.lmt
weka.classifiers.trees.m5
weka.clusterers
weka.core
weka.core.converters
weka.core.expressionlanguage.weka
weka.core.json
weka.core.neighboursearch
weka.core.neighboursearch.balltrees
weka.core.neighboursearch.kdtrees
weka.core.pmml
weka.core.xml
weka.datagenerators
weka.datagenerators.classifiers.classification
weka.datagenerators.classifiers.regression
weka.datagenerators.clusterers
weka.estimators
weka.experiment
weka.filters
weka.filters.supervised.attribute
weka.filters.supervised.instance
weka.filters.unsupervised.attribute
weka.filters.unsupervised.instance
weka.gui
weka.gui.arffviewer
weka.gui.beans
weka.gui.boundaryvisualizer
weka.gui.experiment
weka.gui.explorer
weka.gui.knowledgeflow
weka.gui.streams
weka.gui.treevisualizer
weka.gui.visualize
weka.gui.visualize.plugins
weka.knowledgeflow
weka.knowledgeflow.steps

Uses of Instances in weka.associations

Methods in weka.associations that return Instances

Modifier and Type	Method	Description
static Instances	LabeledItemSet.divide(Instances instances, boolean invert)	Splits the class attribute away.
Instances	Apriori.getInstancesNoClass()	Gets the instances without the class atrribute.
Instances	CARuleMiner.getInstancesNoClass()	Gets the instances without the class attribute
Instances	Apriori.getInstancesOnlyClass()	Gets only the class attribute of the instances.
Instances	CARuleMiner.getInstancesOnlyClass()	Gets the class attribute and its values for all instances

Methods in weka.associations with parameters of type Instances

Modifier and Type	Method	Description
void	Apriori.buildAssociations(Instances instances)	Method that generates all large itemsets with a minimum support, and from these all association rules with a minimum confidence.
void	Associator.buildAssociations(Instances data)	Generates an associator.
void	FilteredAssociator.buildAssociations(Instances data)	Build the associator on the filtered data.
void	FPGrowth.buildAssociations(Instances data)	Method that generates all large item sets with a minimum support, and from these all association rules with a minimum metric (i.e.
static Instances	LabeledItemSet.divide(Instances instances, boolean invert)	Splits the class attribute away.
String	AssociatorEvaluation.evaluate(Associator associator, Instances data)	Evaluates the associator with the given commandline options and returns the evaluation string.
ArrayList<Object>[]	Apriori.mineCARs(Instances data)	Method that mines all class association rules with minimum support and with a minimum confidence.
ArrayList<Object>[]	CARuleMiner.mineCARs(Instances data)	Method for mining class association rules.
static ArrayList<Object>	AprioriItemSet.singletons(Instances instances, boolean treatZeroAsMissing)	Converts the header info of the given set of instances into a set of item sets (singletons).
static ArrayList<Object>	ItemSet.singletons(Instances instances)	Converts the header info of the given set of instances into a set of item sets (singletons).
static ArrayList<Object>	LabeledItemSet.singletons(Instances instancesNoClass, Instances classes)	Converts the header info of the given set of instances into a set of item sets (singletons).
final String	AprioriItemSet.toString(Instances instances)	Returns the contents of an item set as a string.
String	ItemSet.toString(Instances instances)	Returns the contents of an item set as a string.
String	ItemSet.toString(Instances instances, char outerDelim, char innerDelim)	Returns the contents of an item set as a delimited string.
static void	ItemSet.upDateCounters(ArrayList<Object> itemSets, Instances instances)	Updates counters for a set of item sets and a set of instances.
static void	LabeledItemSet.upDateCounters(ArrayList<Object> itemSets, Instances instancesNoClass, Instances instancesClass)	Updates counter of a specific item set
static void	ItemSet.upDateCountersTreatZeroAsMissing(ArrayList<Object> itemSets, Instances instances)	Updates counters for a set of item sets and a set of instances.
static void	LabeledItemSet.upDateCountersTreatZeroAsMissing(ArrayList<LabeledItemSet> itemSets, Instances instancesNoClass, Instances instancesClass)	Updates counter of a specific item set

Uses of Instances in weka.attributeSelection

Methods in weka.attributeSelection that return Instances

Modifier and Type	Method	Description
Instances	PrincipalComponents.getFilteredInputFormat()	Return the header of the training data after all filtering - i.e missing values and nominal to binary.
Instances	AttributeSelection.reduceDimensionality(Instances in)	reduce the dimensionality of a set of instances to include only those attributes chosen by the last run of attribute selection.
Instances	AttributeTransformer.transformedData(Instances data)	Transform the supplied data set (assumed to be the same format as the training data)
Instances	PrincipalComponents.transformedData(Instances data)	Gets the transformed training data.
Instances	AttributeTransformer.transformedHeader()	Returns just the header for the transformed data (ie.
Instances	PrincipalComponents.transformedHeader()	Returns just the header for the transformed data (ie.

Methods in weka.attributeSelection with parameters of type Instances

Modifier and Type	Method	Description
abstract void	ASEvaluation.buildEvaluator(Instances data)	Generates a attribute evaluator.
void	CfsSubsetEval.buildEvaluator(Instances data)	Generates a attribute evaluator.
void	ClassifierAttributeEval.buildEvaluator(Instances data)	Initializes a ClassifierAttribute attribute evaluator.
void	ClassifierSubsetEval.buildEvaluator(Instances data)	Generates a attribute evaluator.
void	CorrelationAttributeEval.buildEvaluator(Instances data)	Initializes an information gain attribute evaluator.
void	GainRatioAttributeEval.buildEvaluator(Instances data)	Initializes a gain ratio attribute evaluator.
void	InfoGainAttributeEval.buildEvaluator(Instances data)	Initializes an information gain attribute evaluator.
void	OneRAttributeEval.buildEvaluator(Instances data)	Initializes a OneRAttribute attribute evaluator.
void	PrincipalComponents.buildEvaluator(Instances data)	Initializes principal components and performs the analysis
void	ReliefFAttributeEval.buildEvaluator(Instances data)	Initializes a ReliefF attribute evaluator.
void	SymmetricalUncertAttributeEval.buildEvaluator(Instances data)	Initializes a symmetrical uncertainty attribute evaluator.
void	WrapperSubsetEval.buildEvaluator(Instances data)	Generates a attribute evaluator.
double	ClassifierSubsetEval.evaluateSubset(BitSet subset, Instances holdOut)	Evaluates a subset of attributes with respect to a set of instances.
abstract double	HoldOutSubsetEvaluator.evaluateSubset(BitSet subset, Instances holdOut)	Evaluates a subset of attributes with respect to a set of instances.
void	PrincipalComponents.initializeAndComputeMatrix(Instances data)	Intializes the evaluator, filters the input data and computes the correlation/covariance matrix.
Instances	AttributeSelection.reduceDimensionality(Instances in)	reduce the dimensionality of a set of instances to include only those attributes chosen by the last run of attribute selection.
abstract int[]	ASSearch.search(ASEvaluation ASEvaluator, Instances data)	Searches the attribute subset/ranking space.
int[]	BestFirst.search(ASEvaluation ASEval, Instances data)	Searches the attribute subset space by best first search
int[]	GreedyStepwise.search(ASEvaluation ASEval, Instances data)	Searches the attribute subset space by forward selection.
int[]	Ranker.search(ASEvaluation ASEval, Instances data)	Kind of a dummy search algorithm.
static String	AttributeSelection.SelectAttributes(ASEvaluation ASEvaluator, String[] options, Instances train)	Perform attribute selection with a particular evaluator and a set of options specifying search method and options for the search method and evaluator.
void	AttributeSelection.SelectAttributes(Instances data)	Perform attribute selection on the supplied training instances.
void	AttributeSelection.selectAttributesCVSplit(Instances split)	Select attributes for a split of the data.
Instances	AttributeTransformer.transformedData(Instances data)	Transform the supplied data set (assumed to be the same format as the training data)
Instances	PrincipalComponents.transformedData(Instances data)	Gets the transformed training data.
void	AttributeSelection.updateStatsForModelCVSplit(Instances split, ASEvaluation evaluator, ASSearch search, int[] attributeSet, boolean doRank)	Update the attribute selection stats for a cross-validation fold of the data.

Uses of Instances in weka.classifiers

Methods in weka.classifiers that return Instances

Modifier and Type	Method	Description
Instances	CostMatrix.applyCostMatrix(Instances data, Random random)	Applies the cost matrix to a set of instances.
Instances	Evaluation.getHeader()	Returns the header of the underlying dataset.

Methods in weka.classifiers with parameters of type Instances

Modifier and Type	Method	Description
Instances	CostMatrix.applyCostMatrix(Instances data, Random random)	Applies the cost matrix to a set of instances.
void	Classifier.buildClassifier(Instances data)	Generates a classifier.
void	IteratedSingleClassifierEnhancer.buildClassifier(Instances data)	Stump method for building the classifiers.
void	ParallelIteratedSingleClassifierEnhancer.buildClassifier(Instances data)	Stump method for building the classifiers
void	ParallelMultipleClassifiersCombiner.buildClassifier(Instances data)	Stump method for building the classifiers
void	Evaluation.crossValidateModel(String classifierString, Instances data, int numFolds, String[] options, Random random)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
void	Evaluation.crossValidateModel(Classifier classifier, Instances data, int numFolds, Random random)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
void	Evaluation.crossValidateModel(Classifier classifier, Instances data, int numFolds, Random random, Object... forPredictionsPrinting)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
double[][]	AbstractClassifier.distributionsForInstances(Instances batch)	Batch prediction method.
double[]	Evaluation.evaluateModel(Classifier classifier, Instances data, Object... forPredictionsPrinting)	Evaluates the classifier on a given set of instances.
void	IterativeClassifier.initializeClassifier(Instances instances)	Initializes an iterative classifier.
void	Evaluation.setPriors(Instances train)	Sets the class prior probabilities.

Constructors in weka.classifiers with parameters of type Instances

Modifier	Constructor	Description
	AggregateableEvaluation(Instances data)	Constructs a new AggregateableEvaluation object
	AggregateableEvaluation(Instances data, CostMatrix costMatrix)	Constructs a new AggregateableEvaluation object
	Evaluation(Instances data)
	Evaluation(Instances data, CostMatrix costMatrix)

Uses of Instances in weka.classifiers.bayes

Fields in weka.classifiers.bayes declared as Instances

Modifier and Type	Field	Description
Instances	BayesNet.m_Instances	The dataset header for the purposes of printing out a semi-intelligible model

Methods in weka.classifiers.bayes that return Instances

Modifier and Type	Method	Description
Instances	NaiveBayes.getHeader()	Return the header that this classifier was trained with

Methods in weka.classifiers.bayes with parameters of type Instances

Modifier and Type	Method	Description
void	BayesNet.buildClassifier(Instances instances)	Generates the classifier.
void	NaiveBayes.buildClassifier(Instances instances)	Generates the classifier.
void	NaiveBayesMultinomial.buildClassifier(Instances instances)	Generates the classifier.
void	NaiveBayesMultinomialText.buildClassifier(Instances data)	Generates the classifier.
void	NaiveBayesMultinomialUpdateable.buildClassifier(Instances instances)	Generates the classifier.

Uses of Instances in weka.classifiers.bayes.net

Methods in weka.classifiers.bayes.net with parameters of type Instances

Modifier and Type	Method	Description
void	ParentSet.addParent(int nParent, int iParent, Instances _Instances)	Add parent to parent set at specific location and update internals (specifically the cardinality of the parent set)
void	ParentSet.addParent(int nParent, Instances _Instances)	Add parent to parent set and update internals (specifically the cardinality of the parent set)
void	ParentSet.deleteLastParent(Instances _Instances)	Delete last added parent from parent set and update internals (specifically the cardinality of the parent set)
int	ParentSet.deleteParent(int nParent, Instances _Instances)	delete node from parent set
int	ParentSet.getFreshCardinalityOfParents(Instances _Instances)	returns cardinality of parents after recalculation
static ADNode	ADNode.makeADTree(int iNode, ArrayList<Integer> nRecords, Instances instances)	create sub tree
static ADNode	ADNode.makeADTree(Instances instances)	create AD tree from set of instances
static VaryNode	ADNode.makeVaryNode(int iNode, ArrayList<Integer> nRecords, Instances instances)	create sub tree
void	EditableBayesNet.setData(Instances instances)	Assuming a network structure is defined and we want to learn from data, the data set must be put if correct order first and possibly discretized/missing values filled in before proceeding to CPT learning.

Constructors in weka.classifiers.bayes.net with parameters of type Instances

Modifier	Constructor	Description
	EditableBayesNet(Instances instances)	constructor, creates empty network with nodes based on the attributes in a data set

Uses of Instances in weka.classifiers.bayes.net.search

Methods in weka.classifiers.bayes.net.search with parameters of type Instances

Modifier and Type	Method	Description
void	SearchAlgorithm.buildStructure(BayesNet bayesNet, Instances instances)	buildStructure determines the network structure/graph of the network.

Uses of Instances in weka.classifiers.bayes.net.search.fixed

Methods in weka.classifiers.bayes.net.search.fixed with parameters of type Instances

Modifier and Type	Method	Description
void	FromFile.buildStructure(BayesNet bayesNet, Instances instances)
void	NaiveBayes.buildStructure(BayesNet bayesNet, Instances instances)

Uses of Instances in weka.classifiers.bayes.net.search.global

Methods in weka.classifiers.bayes.net.search.global with parameters of type Instances

Modifier and Type	Method	Description
void	TAN.buildStructure(BayesNet bayesNet, Instances instances)	buildStructure determines the network structure/graph of the network using the maximimum weight spanning tree algorithm of Chow and Liu
void	K2.search(BayesNet bayesNet, Instances instances)	search determines the network structure/graph of the network with the K2 algorithm, restricted by its initial structure (which can be an empty graph, or a Naive Bayes graph.
void	SimulatedAnnealing.search(BayesNet bayesNet, Instances instances)

Uses of Instances in weka.classifiers.bayes.net.search.local

Methods in weka.classifiers.bayes.net.search.local with parameters of type Instances

Modifier and Type	Method	Description
void	LocalScoreSearchAlgorithm.buildStructure(BayesNet bayesNet, Instances instances)	buildStructure determines the network structure/graph of the network with the K2 algorithm, restricted by its initial structure (which can be an empty graph, or a Naive Bayes graph.
void	TAN.buildStructure(BayesNet bayesNet, Instances instances)	buildStructure determines the network structure/graph of the network using the maximimum weight spanning tree algorithm of Chow and Liu
void	K2.search(BayesNet bayesNet, Instances instances)	search determines the network structure/graph of the network with the K2 algorithm, restricted by its initial structure (which can be an empty graph, or a Naive Bayes graph.
void	SimulatedAnnealing.search(BayesNet bayesNet, Instances instances)

Constructors in weka.classifiers.bayes.net.search.local with parameters of type Instances

Modifier	Constructor	Description
	LocalScoreSearchAlgorithm(BayesNet bayesNet, Instances instances)	constructor

Uses of Instances in weka.classifiers.evaluation

Methods in weka.classifiers.evaluation that return Instances

Modifier and Type	Method	Description
Instances	CostCurve.getCurve(ArrayList<Prediction> predictions)	Calculates the performance stats for the default class and return results as a set of Instances.
Instances	CostCurve.getCurve(ArrayList<Prediction> predictions, int classIndex)	Calculates the performance stats for the desired class and return results as a set of Instances.
Instances	MarginCurve.getCurve(ArrayList<Prediction> predictions)	Calculates the cumulative margin distribution for the set of predictions, returning the result as a set of Instances.
Instances	ThresholdCurve.getCurve(ArrayList<Prediction> predictions)	Calculates the performance stats for the default class and return results as a set of Instances.
Instances	ThresholdCurve.getCurve(ArrayList<Prediction> predictions, int classIndex)	Calculates the performance stats for the desired class and return results as a set of Instances.
Instances	Evaluation.getHeader()	Returns the header of the underlying dataset.

Methods in weka.classifiers.evaluation with parameters of type Instances

Modifier and Type	Method	Description
static double	RegressionAnalysis.calculateRSquared(Instances data, double ssr)	Returns the R-squared value for a linear regression model, where sum of squared residuals is already calculated.
static double	RegressionAnalysis.calculateSSR(Instances data, Attribute chosen, double slope, double intercept)	Returns the sum of squared residuals of the simple linear regression model: y = a + bx.
static double[]	RegressionAnalysis.calculateStdErrorOfCoef(Instances data, boolean[] selected, double ssr, int n, int k)	Returns an array of the standard errors of the coefficients in a multiple linear regression.
static double[]	RegressionAnalysis.calculateStdErrorOfCoef(Instances data, Attribute chosen, double slope, double intercept, int df)	Returns the standard errors of slope and intercept for a simple linear regression model: y = a + bx.
void	Evaluation.crossValidateModel(String classifierString, Instances data, int numFolds, String[] options, Random random)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
void	Evaluation.crossValidateModel(Classifier classifier, Instances data, int numFolds, Random random)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
void	Evaluation.crossValidateModel(Classifier classifier, Instances data, int numFolds, Random random, Object... forPrinting)	Performs a (stratified if class is nominal) cross-validation for a classifier on a set of instances.
double[]	Evaluation.evaluateModel(Classifier classifier, Instances data, Object... forPredictionsPrinting)	Evaluates the classifier on a given set of instances.
ArrayList<Prediction>	EvaluationUtils.getCVPredictions(Classifier classifier, Instances data, int numFolds)	Generate a bunch of predictions ready for processing, by performing a cross-validation on the supplied dataset.
static double	ThresholdCurve.getNPointPrecision(Instances tcurve, int n)	Calculates the n point precision result, which is the precision averaged over n evenly spaced (w.r.t recall) samples of the curve.
static double	ThresholdCurve.getPRCArea(Instances tcurve)	Calculates the area under the precision-recall curve (AUPRC).
static double	ThresholdCurve.getROCArea(Instances tcurve)	Calculates the area under the ROC curve as the Wilcoxon-Mann-Whitney statistic.
ArrayList<Prediction>	EvaluationUtils.getTestPredictions(Classifier classifier, Instances test)	Generate a bunch of predictions ready for processing, by performing a evaluation on a test set assuming the classifier is already trained.
static int	ThresholdCurve.getThresholdInstance(Instances tcurve, double threshold)	Gets the index of the instance with the closest threshold value to the desired target
ArrayList<Prediction>	EvaluationUtils.getTrainTestPredictions(Classifier classifier, Instances train, Instances test)	Generate a bunch of predictions ready for processing, by performing a evaluation on a test set after training on the given training set.
void	Evaluation.setPriors(Instances train)	Sets the class prior probabilities.

Constructors in weka.classifiers.evaluation with parameters of type Instances

Modifier	Constructor	Description
	AggregateableEvaluation(Instances data)	Constructs a new AggregateableEvaluation object
	AggregateableEvaluation(Instances data, CostMatrix costMatrix)	Constructs a new AggregateableEvaluation object
	Evaluation(Instances data)	Initializes all the counters for the evaluation.
	Evaluation(Instances data, CostMatrix costMatrix)	Initializes all the counters for the evaluation and also takes a cost matrix as parameter.

Uses of Instances in weka.classifiers.evaluation.output.prediction

Methods in weka.classifiers.evaluation.output.prediction that return Instances

Modifier and Type	Method	Description
Instances	AbstractOutput.getHeader()	Returns the header of the dataset.

Methods in weka.classifiers.evaluation.output.prediction with parameters of type Instances

Modifier and Type	Method	Description
void	AbstractOutput.print(Classifier classifier, Instances testset)	Prints the header, classifications and footer to the buffer.
void	AbstractOutput.printClassifications(Classifier classifier, Instances testset)	Prints the classifications to the buffer.
void	AbstractOutput.setHeader(Instances value)	Sets the header of the dataset.

Uses of Instances in weka.classifiers.functions

Methods in weka.classifiers.functions with parameters of type Instances

Modifier and Type	Method	Description
void	GaussianProcesses.buildClassifier(Instances insts)	Method for building the classifier.
void	LinearRegression.buildClassifier(Instances data)	Builds a regression model for the given data.
void	Logistic.buildClassifier(Instances train)	Builds the classifier
void	MultilayerPerceptron.buildClassifier(Instances i)	Call this function to build and train a neural network for the training data provided.
void	SGD.buildClassifier(Instances data)	Method for building the classifier.
void	SGDText.buildClassifier(Instances data)	Method for building the classifier.
void	SimpleLinearRegression.buildClassifier(Instances insts)	Builds a simple linear regression model given the supplied training data.
void	SimpleLogistic.buildClassifier(Instances data)	Builds the logistic regression using LogitBoost.
void	SMO.buildClassifier(Instances insts)	Method for building the classifier.
void	SMOreg.buildClassifier(Instances instances)	Method for building the classifier.
void	VotedPerceptron.buildClassifier(Instances insts)	Builds the ensemble of perceptrons.
void	MultilayerPerceptron.initializeClassifier(Instances data)	Initializes an iterative classifier.
String	Logistic.toPMML(Instances train)	Produce a PMML representation of this logistic model

Uses of Instances in weka.classifiers.functions.supportVector

Methods in weka.classifiers.functions.supportVector with parameters of type Instances

Modifier and Type	Method	Description
void	RegOptimizer.buildClassifier(Instances data)	learn SVM parameters from data.
void	RegSMO.buildClassifier(Instances instances)	learn SVM parameters from data using Smola's SMO algorithm.
void	RegSMOImproved.buildClassifier(Instances instances)	learn SVM parameters from data using Keerthi's SMO algorithm.
void	CachedKernel.buildKernel(Instances data)	builds the kernel with the given data.
void	Kernel.buildKernel(Instances data)	builds the kernel with the given data
void	NormalizedPolyKernel.buildKernel(Instances data)	builds the kernel with the given data.
void	Puk.buildKernel(Instances data)	builds the kernel with the given data.
void	RBFKernel.buildKernel(Instances data)	Builds the kernel.
void	StringKernel.buildKernel(Instances data)	builds the kernel with the given data.
String	KernelEvaluation.evaluate(Kernel kernel, Instances data)	Evaluates the Kernel with the given commandline options and returns the evaluation string.

Constructors in weka.classifiers.functions.supportVector with parameters of type Instances

Modifier	Constructor	Description
	NormalizedPolyKernel(Instances dataset, int cacheSize, double exponent, boolean lowerOrder)	Creates a new NormalizedPolyKernel instance.
	PolyKernel(Instances data, int cacheSize, double exponent, boolean lowerOrder)	Creates a new PolyKernel instance.
	Puk(Instances data, int cacheSize, double omega, double sigma)	Constructor.
	RBFKernel(Instances data, int cacheSize, double gamma)	Creates a new RBFKernel instance.
	StringKernel(Instances data, int cacheSize, int subsequenceLength, double lambda, boolean debug)	creates a new StringKernel object.

Uses of Instances in weka.classifiers.lazy

Methods in weka.classifiers.lazy that return Instances

Modifier and Type	Method	Description
Instances	IBk.pruneToK(Instances neighbours, double[] distances, int k)	Prunes the list to contain the k nearest neighbors.

Methods in weka.classifiers.lazy with parameters of type Instances

Modifier and Type	Method	Description
void	IBk.buildClassifier(Instances instances)	Generates the classifier.
void	KStar.buildClassifier(Instances instances)	Generates the classifier.
void	LWL.buildClassifier(Instances instances)	Generates the classifier.
Instances	IBk.pruneToK(Instances neighbours, double[] distances, int k)	Prunes the list to contain the k nearest neighbors.

Uses of Instances in weka.classifiers.lazy.kstar

Constructors in weka.classifiers.lazy.kstar with parameters of type Instances

Modifier	Constructor	Description
	KStarNominalAttribute(Instance test, Instance train, int attrIndex, Instances trainSet, int[][] randClassCol, KStarCache cache)	Constructor
	KStarNumericAttribute(Instance test, Instance train, int attrIndex, Instances trainSet, int[][] randClassCols, KStarCache cache)	Constructor

Uses of Instances in weka.classifiers.meta

Methods in weka.classifiers.meta with parameters of type Instances

Modifier and Type	Method	Description
void	AdaBoostM1.buildClassifier(Instances data)	Method used to build the classifier.
void	AdditiveRegression.buildClassifier(Instances data)	Method used to build the classifier.
void	AttributeSelectedClassifier.buildClassifier(Instances data)	Build the classifier on the dimensionally reduced data.
void	Bagging.buildClassifier(Instances data)	Bagging method.
void	ClassificationViaRegression.buildClassifier(Instances insts)	Builds the classifiers.
void	CostSensitiveClassifier.buildClassifier(Instances data)	Builds the model of the base learner.
void	CVParameterSelection.buildClassifier(Instances instances)	Generates the classifier.
void	FilteredClassifier.buildClassifier(Instances data)	Build the classifier on the filtered data.
void	IterativeClassifierOptimizer.buildClassifier(Instances data)	Builds the classifier.
void	LogitBoost.buildClassifier(Instances data)	Method used to build the classifier.
void	MultiClassClassifier.buildClassifier(Instances insts)	Builds the classifiers.
void	MultiClassClassifierUpdateable.buildClassifier(Instances insts)
void	MultiScheme.buildClassifier(Instances data)	Buildclassifier selects a classifier from the set of classifiers by minimising error on the training data.
void	RandomCommittee.buildClassifier(Instances data)	Builds the committee of randomizable classifiers.
void	RandomizableFilteredClassifier.buildClassifier(Instances data)	Build the classifier on the filtered data.
void	RandomSubSpace.buildClassifier(Instances data)	builds the classifier.
void	RegressionByDiscretization.buildClassifier(Instances instances)	Generates the classifier.
void	Stacking.buildClassifier(Instances data)	Builds a classifier using stacking.
void	Vote.buildClassifier(Instances data)	Builds all classifiers in the ensemble
void	WeightedInstancesHandlerWrapper.buildClassifier(Instances data)	builds the classifier.
double[][]	AttributeSelectedClassifier.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	Bagging.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	ClassificationViaRegression.distributionsForInstances(Instances insts)	Returns predictions for a whole set of instances.
double[][]	CostSensitiveClassifier.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	FilteredClassifier.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	LogitBoost.distributionsForInstances(Instances insts)	Calculates the class membership probabilities for the given test instances.
double[][]	RandomCommittee.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	RandomSubSpace.distributionsForInstances(Instances insts)	Batch scoring method.
double[][]	Stacking.distributionsForInstances(Instances instances)	Returns class probabilities for all given instances if the class is nominal or corresponding predicted numeric values if the class is numeric.
void	Bagging.generatePartition(Instances data)	Builds the classifier to generate a partition.
void	FilteredClassifier.generatePartition(Instances data)	Builds the classifier to generate a partition.
void	RandomCommittee.generatePartition(Instances data)	Builds the classifier to generate a partition.
void	AdaBoostM1.initializeClassifier(Instances data)	Initialize the classifier.
void	AdditiveRegression.initializeClassifier(Instances data)	Initialize classifier.
void	FilteredClassifier.initializeClassifier(Instances data)	Initializes an iterative classifier.
void	LogitBoost.initializeClassifier(Instances data)	Builds the boosted classifier
void	RandomizableFilteredClassifier.initializeClassifier(Instances data)	Initializes an iterative classifier.

Uses of Instances in weka.classifiers.misc

Methods in weka.classifiers.misc that return Instances

Modifier and Type	Method	Description
Instances	InputMappedClassifier.getModelHeader(Instances defaultH)	Return the instance structure that the encapsulated model was built with.

Methods in weka.classifiers.misc with parameters of type Instances

Modifier and Type	Method	Description
void	InputMappedClassifier.buildClassifier(Instances data)	Build the classifier
void	SerializedClassifier.buildClassifier(Instances data)	loads only the serialized classifier
Instances	InputMappedClassifier.getModelHeader(Instances defaultH)	Return the instance structure that the encapsulated model was built with.
void	InputMappedClassifier.setModelHeader(Instances modelHeader)	Set the structure of the data used to create the model.
void	InputMappedClassifier.setTestStructure(Instances testStructure)	Set the test structure (if known in advance) that we are likely to see.

Uses of Instances in weka.classifiers.pmml.consumer

Methods in weka.classifiers.pmml.consumer that return Instances

Modifier and Type	Method	Description
Instances	PMMLClassifier.getDataDictionary()	Get the data dictionary.

Methods in weka.classifiers.pmml.consumer with parameters of type Instances

Modifier and Type	Method	Description
void	PMMLClassifier.buildClassifier(Instances data)	Throw an exception - PMML models are pre-built.
void	PMMLClassifier.mapToMiningSchema(Instances dataSet)	Map mining schema to incoming instances.

Constructors in weka.classifiers.pmml.consumer with parameters of type Instances

Modifier	Constructor	Description
	GeneralRegression(Element model, Instances dataDictionary, MiningSchema miningSchema)	Constructs a GeneralRegression classifier.
	NeuralNetwork(Element model, Instances dataDictionary, MiningSchema miningSchema)
	Regression(Element model, Instances dataDictionary, MiningSchema miningSchema)	Constructs a new PMML Regression.
	RuleSetModel(Element model, Instances dataDictionary, MiningSchema miningSchema)	Constructor for a RuleSetModel
	SupportVectorMachineModel(Element model, Instances dataDictionary, MiningSchema miningSchema)	Construct a new SupportVectorMachineModel encapsulating the information provided in the PMML document.
	TreeModel(Element model, Instances dataDictionary, MiningSchema miningSchema)

Uses of Instances in weka.classifiers.pmml.producer

Methods in weka.classifiers.pmml.producer with parameters of type Instances

Modifier and Type	Method	Description
static void	AbstractPMMLProducerHelper.addDataDictionary(Instances trainHeader, PMML pmml)	Adds a data dictionary to the supplied PMML object.
static String[]	AbstractPMMLProducerHelper.getNameAndValueFromUnsupervisedNominalToBinaryDerivedAttribute(Instances train, Attribute derived)	Extracts the original attribute name and value from the name of a binary indicator attribute created by unsupervised NominalToBinary.
static String	LogisticProducerHelper.toPMML(Instances train, Instances structureAfterFiltering, double[][] par, int numClasses)	Produce the PMML for a Logistic classifier

Uses of Instances in weka.classifiers.rules

Methods in weka.classifiers.rules that return Instances

Modifier and Type	Method	Description
Instances	RuleStats.getData()	Get the data of the stats
Instances[]	RuleStats.getFiltered(int index)	Get the data after filtering the given rule
static final Instances[]	RuleStats.partition(Instances data, int numFolds)	Patition the data into 2, first of which has (numFolds-1)/numFolds of the data and the second has 1/numFolds of the data
static Instances	RuleStats.rmCoveredBySuccessives(Instances data, ArrayList<Rule> rules, int index)	Static utility function to count the data covered by the rules after the given index in the given rules, and then remove them.
abstract Instances[]	JRip.Antd.splitData(Instances data, double defAcRt, double cla)
Instances[]	JRip.NominalAntd.splitData(Instances data, double defAcRt, double cl)	Implements the splitData function.
Instances[]	JRip.NumericAntd.splitData(Instances insts, double defAcRt, double cl)	Implements the splitData function.
static final Instances	RuleStats.stratify(Instances data, int folds, Random rand)	Stratify the given data into the given number of bags based on the class values.

Methods in weka.classifiers.rules with parameters of type Instances

Modifier and Type	Method	Description
void	DecisionTable.buildClassifier(Instances data)	Generates the classifier.
void	JRip.buildClassifier(Instances instances)	Builds Ripper in the order of class frequencies.
void	OneR.buildClassifier(Instances instances)	Generates the classifier.
void	PART.buildClassifier(Instances instances)	Generates the classifier.
void	ZeroR.buildClassifier(Instances instances)	Generates the classifier.
void	JRip.RipperRule.cleanUp(Instances data)	Removes redundant tests in the rule.
void	RuleStats.countData(int index, Instances uncovered, double[][] prevRuleStats)	Count data from the position index in the ruleset assuming that given data are not covered by the rules in position 0...(index-1), and the statistics of these rules are provided. This procedure is typically useful when a temporary object of RuleStats is constructed in order to efficiently calculate the relative DL of rule in position index, thus all other stuff is not needed.
void	JRip.RipperRule.grow(Instances data)	Build one rule using the growing data
abstract void	Rule.grow(Instances data)	Build this rule
weka.classifiers.rules.OneR.OneRRule	OneR.newNominalRule(Attribute attr, Instances data, int[] missingValueCounts)	Create a rule branching on this nominal attribute.
weka.classifiers.rules.OneR.OneRRule	OneR.newNumericRule(Attribute attr, Instances data, int[] missingValueCounts)	Create a rule branching on this numeric attribute
weka.classifiers.rules.OneR.OneRRule	OneR.newRule(Attribute attr, Instances data)	Create a rule branching on this attribute.
static double	RuleStats.numAllConditions(Instances data)	Compute the number of all possible conditions that could appear in a rule of a given data.
static final Instances[]	RuleStats.partition(Instances data, int numFolds)	Patition the data into 2, first of which has (numFolds-1)/numFolds of the data and the second has 1/numFolds of the data
void	JRip.RipperRule.prune(Instances pruneData, boolean useWhole)	Prune all the possible final sequences of the rule using the pruning data.
static Instances	RuleStats.rmCoveredBySuccessives(Instances data, ArrayList<Rule> rules, int index)	Static utility function to count the data covered by the rules after the given index in the given rules, and then remove them.
void	RuleStats.setData(Instances data)	Set the data of the stats, overwriting the old one if any
abstract Instances[]	JRip.Antd.splitData(Instances data, double defAcRt, double cla)
Instances[]	JRip.NominalAntd.splitData(Instances data, double defAcRt, double cl)	Implements the splitData function.
Instances[]	JRip.NumericAntd.splitData(Instances insts, double defAcRt, double cl)	Implements the splitData function.
static final Instances	RuleStats.stratify(Instances data, int folds, Random rand)	Stratify the given data into the given number of bags based on the class values.
String	DecisionTableHashKey.toString(Instances t, int maxColWidth)	Convert a hash entry to a string

Constructors in weka.classifiers.rules with parameters of type Instances

Modifier	Constructor	Description
	RuleStats(Instances data, ArrayList<Rule> rules)	Constructor that provides ruleset and data

Uses of Instances in weka.classifiers.rules.part

Methods in weka.classifiers.rules.part with parameters of type Instances

Modifier and Type	Method	Description
void	MakeDecList.buildClassifier(Instances data)	Builds dec list.
void	C45PruneableDecList.buildDecList(Instances data, boolean leaf)	Builds the partial tree without hold out set.
void	ClassifierDecList.buildDecList(Instances data, boolean leaf)	Builds the partial tree without hold out set.
void	PruneableDecList.buildDecList(Instances train, Instances test, boolean leaf)	Builds the partial tree with hold out set
void	ClassifierDecList.buildRule(Instances data)	Method for building a pruned partial tree.
void	PruneableDecList.buildRule(Instances train, Instances test)	Method for building a pruned partial tree.
final void	ClassifierDecList.cleanup(Instances justHeaderInfo)	Cleanup in order to save memory.

Uses of Instances in weka.classifiers.trees

Methods in weka.classifiers.trees with parameters of type Instances

Modifier and Type	Method	Description
void	DecisionStump.buildClassifier(Instances instances)	Generates the classifier.
void	HoeffdingTree.buildClassifier(Instances data)	Builds the classifier.
void	J48.buildClassifier(Instances instances)	Generates the classifier.
void	LMT.buildClassifier(Instances data)	Builds the classifier.
void	RandomTree.buildClassifier(Instances data)	Builds classifier.
void	REPTree.buildClassifier(Instances data)	Builds classifier.
void	J48.generatePartition(Instances data)	Builds the classifier to generate a partition.
void	RandomTree.generatePartition(Instances data)	Builds the classifier to generate a partition.
void	REPTree.generatePartition(Instances data)	Builds the classifier to generate a partition.

Uses of Instances in weka.classifiers.trees.ht

Constructors in weka.classifiers.trees.ht with parameters of type Instances

Modifier	Constructor	Description
	NBNode(Instances header, double nbWeightThreshold)	Construct a new NBNode
	NBNodeAdaptive(Instances header, double nbWeightThreshold)	Constructor

Uses of Instances in weka.classifiers.trees.j48

Methods in weka.classifiers.trees.j48 that return Instances

Modifier and Type	Method	Description
Instances	ClassifierTree.getTrainingData()
Instances[]	ClassifierSplitModel.split(Instances data)	Splits the given set of instances into subsets.

Methods in weka.classifiers.trees.j48 with parameters of type Instances

Modifier and Type	Method	Description
final void	Distribution.addInstWithUnknown(Instances source, int attIndex)	Adds all instances with unknown values for given attribute, weighted according to frequency of instances in each bag.
final void	Distribution.addRange(int bagIndex, Instances source, int startIndex, int lastPlusOne)	Adds all instances in given range to given bag.
void	BinC45Split.buildClassifier(Instances trainInstances)	Creates a C4.5-type split on the given data.
void	C45PruneableClassifierTree.buildClassifier(Instances data)	Method for building a pruneable classifier tree.
void	C45Split.buildClassifier(Instances trainInstances)	Creates a C4.5-type split on the given data.
abstract void	ClassifierSplitModel.buildClassifier(Instances instances)	Builds the classifier split model for the given set of instances.
void	ClassifierTree.buildClassifier(Instances data)	Method for building a classifier tree.
void	NBTreeClassifierTree.buildClassifier(Instances data)	Method for building a naive bayes classifier tree
final void	NBTreeNoSplit.buildClassifier(Instances instances)	Build the no-split node
void	NBTreeSplit.buildClassifier(Instances trainInstances)	Creates a NBTree-type split on the given data.
final void	NoSplit.buildClassifier(Instances instances)	Creates a "no-split"-split for a given set of instances.
void	PruneableClassifierTree.buildClassifier(Instances data)	Method for building a pruneable classifier tree.
void	ClassifierTree.buildTree(Instances data, boolean keepData)	Builds the tree structure.
void	ClassifierTree.buildTree(Instances train, Instances test, boolean keepData)	Builds the tree structure with hold out set
final void	ClassifierTree.cleanup(Instances justHeaderInfo)	Cleanup in order to save memory.
static double	NBTreeNoSplit.crossValidate(NaiveBayesUpdateable fullModel, Instances trainingSet, Random r)	Utility method for fast 5-fold cross validation of a naive bayes model
final void	Distribution.delRange(int bagIndex, Instances source, int startIndex, int lastPlusOne)	Deletes all instances in given range from given bag.
final String	ClassifierSplitModel.dumpLabel(int index, Instances data)	Prints label for subset index of instances (eg class).
final String	ClassifierSplitModel.dumpModel(Instances data)	Prints the split model.
final String	BinC45Split.leftSide(Instances data)	Prints left side of condition.
final String	C45Split.leftSide(Instances data)	Prints left side of condition..
abstract String	ClassifierSplitModel.leftSide(Instances data)	Prints left side of condition satisfied by instances.
final String	NBTreeNoSplit.leftSide(Instances instances)	Does nothing because no condition has to be satisfied.
final String	NBTreeSplit.leftSide(Instances data)	Prints left side of condition..
final String	NoSplit.leftSide(Instances instances)	Does nothing because no condition has to be satisfied.
final double[][]	C45Split.minsAndMaxs(Instances data, double[][] minsAndMaxs, int index)	Returns the minsAndMaxs of the index.th subset.
void	BinC45Split.resetDistribution(Instances data)	Sets distribution associated with model.
void	C45Split.resetDistribution(Instances data)	Sets distribution associated with model.
void	ClassifierSplitModel.resetDistribution(Instances data)	Sets distribution associated with model.
final String	BinC45Split.rightSide(int index, Instances data)	Prints the condition satisfied by instances in a subset.
final String	C45Split.rightSide(int index, Instances data)	Prints the condition satisfied by instances in a subset.
abstract String	ClassifierSplitModel.rightSide(int index, Instances data)	Prints left side of condition satisfied by instances in subset index.
final String	NBTreeNoSplit.rightSide(int index, Instances instances)	Does nothing because no condition has to be satisfied.
final String	NBTreeSplit.rightSide(int index, Instances data)	Prints the condition satisfied by instances in a subset.
final String	NoSplit.rightSide(int index, Instances instances)	Does nothing because no condition has to be satisfied.
final ClassifierSplitModel	BinC45ModelSelection.selectModel(Instances data)	Selects C4.5-type split for the given dataset.
final ClassifierSplitModel	BinC45ModelSelection.selectModel(Instances train, Instances test)	Selects C4.5-type split for the given dataset.
ClassifierSplitModel	C45ModelSelection.selectModel(Instances data)	Selects C4.5-type split for the given dataset.
final ClassifierSplitModel	C45ModelSelection.selectModel(Instances train, Instances test)	Selects C4.5-type split for the given dataset.
abstract ClassifierSplitModel	ModelSelection.selectModel(Instances data)	Selects a model for the given dataset.
ClassifierSplitModel	ModelSelection.selectModel(Instances train, Instances test)	Selects a model for the given train data using the given test data
final ClassifierSplitModel	NBTreeModelSelection.selectModel(Instances data)	Selects NBTree-type split for the given dataset.
final ClassifierSplitModel	NBTreeModelSelection.selectModel(Instances train, Instances test)	Selects NBTree-type split for the given dataset.
final void	BinC45Split.setSplitPoint(Instances allInstances)	Sets split point to greatest value in given data smaller or equal to old split point.
final void	C45Split.setSplitPoint(Instances allInstances)	Sets split point to greatest value in given data smaller or equal to old split point.
final void	Distribution.shiftRange(int from, int to, Instances source, int startIndex, int lastPlusOne)	Shifts all instances in given range from one bag to another one.
final String	ClassifierSplitModel.sourceClass(int index, Instances data)
final String	BinC45Split.sourceExpression(int index, Instances data)	Returns a string containing java source code equivalent to the test made at this node.
final String	C45Split.sourceExpression(int index, Instances data)	Returns a string containing java source code equivalent to the test made at this node.
abstract String	ClassifierSplitModel.sourceExpression(int index, Instances data)
final String	NBTreeNoSplit.sourceExpression(int index, Instances data)	Returns a string containing java source code equivalent to the test made at this node.
final String	NBTreeSplit.sourceExpression(int index, Instances data)	Returns a string containing java source code equivalent to the test made at this node.
final String	NoSplit.sourceExpression(int index, Instances data)	Returns a string containing java source code equivalent to the test made at this node.
Instances[]	ClassifierSplitModel.split(Instances data)	Splits the given set of instances into subsets.

Constructors in weka.classifiers.trees.j48 with parameters of type Instances

Modifier	Constructor	Description
	BinC45ModelSelection(int minNoObj, Instances allData, boolean useMDLcorrection, boolean doNotMakeSplitPointActualValue)	Initializes the split selection method with the given parameters.
	C45ModelSelection(int minNoObj, Instances allData, boolean useMDLcorrection, boolean doNotMakeSplitPointActualValue)	Initializes the split selection method with the given parameters.
	Distribution(Instances source)	Creates a distribution with only one bag according to instances in source.
	Distribution(Instances source, ClassifierSplitModel modelToUse)	Creates a distribution according to given instances and split model.
	NBTreeModelSelection(int minNoObj, Instances allData)	Initializes the split selection method with the given parameters.

Uses of Instances in weka.classifiers.trees.lmt

Methods in weka.classifiers.trees.lmt with parameters of type Instances

Modifier and Type	Method	Description
void	LMTNode.buildClassifier(Instances data)	Method for building a logistic model tree (only called for the root node).
void	LogisticBase.buildClassifier(Instances data)	Builds the logistic regression model usiing LogitBoost.
void	ResidualSplit.buildClassifier(Instances data)	Method not in use
void	ResidualSplit.buildClassifier(Instances data, double[][] dataZs, double[][] dataWs)	Builds the split.
void	SimpleLinearRegression.buildClassifier(Instances insts)	Builds a simple linear regression model given the supplied training data.
void	LMTNode.buildTree(Instances data, SimpleLinearRegression[][] higherRegressions, double totalInstanceWeight, double higherNumParameters, Instances numericDataHeader)	Method for building the tree structure.
final String	ResidualSplit.leftSide(Instances data)	Returns name of splitting attribute (left side of condition).
int	LMTNode.prune(double[] alphas, double[] errors, Instances test)	Method for performing one fold in the cross-validation of the cost-complexity parameter.
final String	ResidualSplit.rightSide(int index, Instances data)	Prints the condition satisfied by instances in a subset.
final ClassifierSplitModel	ResidualModelSelection.selectModel(Instances train)	Method not in use
final ClassifierSplitModel	ResidualModelSelection.selectModel(Instances data, double[][] dataZs, double[][] dataWs)	Selects split based on residuals for the given dataset.
final ClassifierSplitModel	ResidualModelSelection.selectModel(Instances train, Instances test)	Method not in use
final String	ResidualSplit.sourceExpression(int index, Instances data)	Method not in use

Uses of Instances in weka.classifiers.trees.m5

Methods in weka.classifiers.trees.m5 that return Instances

Modifier and Type	Method	Description
Instances	Rule.notCoveredInstances()	Get the instances not covered by this rule

Methods in weka.classifiers.trees.m5 with parameters of type Instances

Modifier and Type	Method	Description
final void	CorrelationSplitInfo.attrSplit(int attr, Instances inst)	Finds the best splitting point for an attribute in the instances
void	SplitEvaluate.attrSplit(int attr, Instances inst)	Finds the best splitting point for an attribute in the instances
final void	YongSplitInfo.attrSplit(int attr, Instances inst)	Finds the best splitting point for an attribute in the instances
void	M5Base.buildClassifier(Instances data)	Generates the classifier.
void	PreConstructedLinearModel.buildClassifier(Instances instances)	Builds the classifier.
void	Rule.buildClassifier(Instances data)	Generates a single rule or m5 model tree.
void	RuleNode.buildClassifier(Instances data)	Build this node (find an attribute and split point)
final String	YongSplitInfo.toString(Instances inst)	Converts the spliting information to string

Constructors in weka.classifiers.trees.m5 with parameters of type Instances

Modifier	Constructor	Description
	Impurity(int partition, int attribute, Instances inst, int k)	Constructs an Impurity object containing the impurity values of partitioning the instances using an attribute
	Values(int low, int high, int attribute, Instances inst)	Constructs an object which stores some statistics of the instances such as sum, squared sum, variance, standard deviation

Uses of Instances in weka.clusterers

Methods in weka.clusterers that return Instances

Modifier and Type	Method	Description
Instances	Canopy.getCanopies()	Get the canopies (cluster centers).
Instances	FarthestFirst.getClusterCentroids()	Get the centroids found by FarthestFirst
Instances	SimpleKMeans.getClusterCentroids()	Gets the the cluster centroids.
Instances	SimpleKMeans.getClusterStandardDevs()	Gets the standard deviations of the numeric attributes in each cluster.

Methods in weka.clusterers with parameters of type Instances

Modifier and Type	Method	Description
abstract void	AbstractClusterer.buildClusterer(Instances data)	Generates a clusterer.
void	Canopy.buildClusterer(Instances data)
void	Clusterer.buildClusterer(Instances data)	Generates a clusterer.
void	Cobweb.buildClusterer(Instances data)	Builds the clusterer.
void	EM.buildClusterer(Instances data)	Generates a clusterer.
void	FarthestFirst.buildClusterer(Instances data)	Generates a clusterer.
void	FilteredClusterer.buildClusterer(Instances data)	Build the clusterer on the filtered data.
void	HierarchicalClusterer.buildClusterer(Instances data)
void	MakeDensityBasedClusterer.buildClusterer(Instances data)	Builds a clusterer for a set of instances.
void	SimpleKMeans.buildClusterer(Instances data)	Generates a clusterer.
static String	ClusterEvaluation.crossValidateModel(String clustererString, Instances data, int numFolds, String[] options, Random random)	Performs a cross-validation for a DensityBasedClusterer clusterer on a set of instances.
static double	ClusterEvaluation.crossValidateModel(DensityBasedClusterer clusterer, Instances data, int numFolds, Random random)	Perform a cross-validation for DensityBasedClusterer on a set of instances.
void	ClusterEvaluation.evaluateClusterer(Instances test)	Evaluate the clusterer on a set of instances.
void	ClusterEvaluation.evaluateClusterer(Instances test, String testFileName)	Evaluate the clusterer on a set of instances.
void	ClusterEvaluation.evaluateClusterer(Instances test, String testFileName, boolean outputModel)	Evaluate the clusterer on a set of instances.
void	Canopy.initializeDistanceFunction(Instances init)	Initialize the distance function (i.e set min/max values for numeric attributes) with the supplied instances.
static String	Canopy.printCanopyAssignments(Instances dataPoints, List<long[]> canopyAssignments)	Print the supplied instances and their canopies
void	Canopy.setCanopies(Instances canopies)	Set the canopies to use (replaces any learned by this clusterer already)

Uses of Instances in weka.core

Methods in weka.core that return Instances

Modifier and Type	Method	Description
Instances	AbstractInstance.dataset()	Returns the dataset this instance has access to.
Instances	Instance.dataset()	Returns the dataset this instance has access to.
Instances	TestInstances.generate()	Generates a new dataset
Instances	TestInstances.generate(String namePrefix)	generates a new dataset.
Instances	AttributeLocator.getData()	returns the underlying data
Instances	TestInstances.getData()	returns the current dataset, can be null
Instances	DictionaryBuilder.getInputFormat()	Gets the currently set input format
Instances	DistanceFunction.getInstances()	returns the instances currently set.
Instances	FilteredDistance.getInstances()	returns the instances currently set.
Instances	NormalizableDistance.getInstances()	returns the instances currently set.
Instances	TestInstances.getRelationalClassFormat()	returns the current strcuture of the relational class attribute, can be null
Instances	TestInstances.getRelationalFormat(int index)	returns the format for the specified relational attribute, can be null
Instances	DictionaryBuilder.getVectorizedFormat()	Get the output format
static Instances	Instances.mergeInstances(Instances first, Instances second)	Merges two sets of Instances together.
Instances	CheckScheme.PostProcessor.process(Instances data)	Provides a hook for derived classes to further modify the data.
final Instances	Attribute.relation()	Returns the header info for a relation-valued attribute, null if the attribute is not relation-valued.
final Instances	Attribute.relation(int valIndex)	Returns a value of a relation-valued attribute.
final Instances	AbstractInstance.relationalValue(int attIndex)	Returns the relational value of a relational attribute.
final Instances	AbstractInstance.relationalValue(Attribute att)	Returns the relational value of a relational attribute.
Instances	Instance.relationalValue(int attIndex)	Returns the relational value of a relational attribute.
Instances	Instance.relationalValue(Attribute att)	Returns the relational value of a relational attribute.
Instances	Instances.resample(Random random)	Creates a new dataset of the same size as this dataset using random sampling with replacement.
static Instances	ResampleUtils.resampleWithWeightIfNecessary(Instances insts, Random rand)	Resamples the dataset using resampleWithWeights(Random) if there are any instance weights other than 1.0 set.
Instances	Instances.resampleWithWeights(Random random)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the current instance weights.
Instances	Instances.resampleWithWeights(Random random, boolean representUsingWeights)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the current instance weights.
Instances	Instances.resampleWithWeights(Random random, boolean[] sampled)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the current instance weights.
Instances	Instances.resampleWithWeights(Random random, boolean[] sampled, boolean representUsingWeights)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the current instance weights.
Instances	Instances.resampleWithWeights(Random random, boolean[] sampled, boolean representUsingWeights, double sampleSize)	Creates a new dataset from this dataset using random sampling with replacement according to current instance weights.
Instances	Instances.resampleWithWeights(Random random, double[] weights)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the given weight vector.
Instances	Instances.resampleWithWeights(Random random, double[] weights, boolean[] sampled)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the given weight vector.
Instances	Instances.resampleWithWeights(Random random, double[] weights, boolean[] sampled, boolean representUsingWeights)	Creates a new dataset of the same size as this dataset using random sampling with replacement according to the given weight vector.
Instances	Instances.resampleWithWeights(Random random, double[] weights, boolean[] sampled, boolean representUsingWeights, double sampleSize)	Creates a new dataset from this dataset using random sampling with replacement according to the given weight vector.
Instances	Instances.stringFreeStructure()	Create a copy of the structure.
Instances	Instances.testCV(int numFolds, int numFold)	Creates the test set for one fold of a cross-validation on the dataset.
Instances	Instances.trainCV(int numFolds, int numFold)	Creates the training set for one fold of a cross-validation on the dataset.
Instances	Instances.trainCV(int numFolds, int numFold, Random random)	Creates the training set for one fold of a cross-validation on the dataset.
Instances	DictionaryBuilder.vectorizeBatch(Instances batch, boolean setAvgDocLength)	Convert a batch of instances

Methods in weka.core with parameters of type Instances

Modifier and Type	Method	Description
int	Attribute.addRelation(Instances value)	Adds a relation to a relation-valued attribute.
int	EuclideanDistance.closestPoint(Instance instance, Instances allPoints, int[] pointList)	Returns the index of the closest point to the current instance.
static Range	Utils.configureRangeFromRangeStringOrAttributeNameList(Instances instanceInfo, String rangeString)	Returns a configured Range object given a 1-based range index string (such as 1-20,35,last) or a comma-separated list of attribute names.
static void	RelationalLocator.copyRelationalValues(Instance instance, boolean instSrcCompat, Instances srcDataset, AttributeLocator srcLoc, Instances destDataset, AttributeLocator destLoc)	Takes relational values referenced by an Instance and copies them from a source dataset to a destination dataset.
static void	RelationalLocator.copyRelationalValues(Instance inst, Instances destDataset, AttributeLocator strAtts)	Copies relational values contained in the instance copied to a new dataset.
static void	StringLocator.copyStringValues(Instance instance, boolean instSrcCompat, Instances srcDataset, AttributeLocator srcLoc, Instances destDataset, AttributeLocator destLoc)	Takes string values referenced by an Instance and copies them from a source dataset to a destination dataset.
static void	StringLocator.copyStringValues(Instance inst, Instances destDataset, AttributeLocator strAtts)	Copies string values contained in the instance copied to a new dataset.
double[][]	BatchPredictor.distributionsForInstances(Instances insts)	Batch scoring method
boolean	Instances.equalHeaders(Instances dataset)	Checks if two headers are equivalent.
String	Instances.equalHeadersMsg(Instances dataset)	Checks if two headers are equivalent.
static Capabilities	Capabilities.forInstances(Instances data)	returns a Capabilities object specific for this data.
static Capabilities	Capabilities.forInstances(Instances data, boolean multi)	returns a Capabilities object specific for this data.
void	PartitionGenerator.generatePartition(Instances data)	Builds the classifier to generate a partition.
Instance	AlgVector.getAsInstance(Instances model, Random random)	Gets the elements of the vector as an instance.
static boolean	ResampleUtils.hasInstanceWeights(Instances insts)	Checks whether there are any instance weights other than 1.0 set.
static Instances	Instances.mergeInstances(Instances first, Instances second)	Merges two sets of Instances together.
Instances	CheckScheme.PostProcessor.process(Instances data)	Provides a hook for derived classes to further modify the data.
static Instances	ResampleUtils.resampleWithWeightIfNecessary(Instances insts, Random rand)	Resamples the dataset using resampleWithWeights(Random) if there are any instance weights other than 1.0 set.
final void	AbstractInstance.setDataset(Instances instances)	Sets the reference to the dataset.
void	Instance.setDataset(Instances instances)	Sets the reference to the dataset.
void	DistanceFunction.setInstances(Instances insts)	Sets the instances.
void	FilteredDistance.setInstances(Instances insts)	Sets the instances.
void	NormalizableDistance.setInstances(Instances insts)	Sets the instances.
void	TestInstances.setRelationalClassFormat(Instances value)	sets the structure for the relational class attribute
void	TestInstances.setRelationalFormat(int index, Instances value)	sets the structure for the bags for the relational attribute
void	DictionaryBuilder.setup(Instances inputFormat)
boolean	Capabilities.test(Instances data)	Tests the given data, whether it can be processed by the handler, given its capabilities.
boolean	Capabilities.test(Instances data, int fromIndex, int toIndex)	Tests a certain range of attributes of the given data, whether it can be processed by the handler, given its capabilities.
void	Capabilities.testWithFail(Instances data)	tests the given data by calling the test(Instances) method and throws an exception if the test fails.
void	Capabilities.testWithFail(Instances data, int fromIndex, int toIndex)	tests the given data by calling the test(Instances,int,int) method and throws an exception if the test fails.
Instances	DictionaryBuilder.vectorizeBatch(Instances batch, boolean setAvgDocLength)	Convert a batch of instances

Constructors in weka.core with parameters of type Instances

Modifier	Constructor	Description
	AlgVector(Instances format, Random random)	Constructs a vector using a given data format.
	Attribute(String attributeName, Instances header)	Constructor for relation-valued attributes.
	Attribute(String attributeName, Instances header, int index)	Constructor for a relation-valued attribute with a particular index.
	Attribute(String attributeName, Instances header, ProtectedProperties metadata)	Constructor for relation-valued attributes.
	AttributeLocator(Instances data, int type)	Initializes the AttributeLocator with the given data for the specified type of attribute.
	AttributeLocator(Instances data, int type, int[] indices)	initializes the AttributeLocator with the given data for the specified type of attribute.
	AttributeLocator(Instances data, int type, int fromIndex, int toIndex)	Initializes the AttributeLocator with the given data for the specified type of attribute.
	ChebyshevDistance(Instances data)	Constructs an Chebyshev Distance object and automatically initializes the ranges.
	EuclideanDistance(Instances data)	Constructs an Euclidean Distance object and automatically initializes the ranges.
	Instances(Instances dataset)	Constructor copying all instances and references to the header information from the given set of instances.
	Instances(Instances dataset, int capacity)	Constructor creating an empty set of instances.
	Instances(Instances source, int first, int toCopy)	Creates a new set of instances by copying a subset of another set.
	ManhattanDistance(Instances data)	Constructs an Manhattan Distance object and automatically initializes the ranges.
	MinkowskiDistance(Instances data)	Constructs an Minkowski Distance object and automatically initializes the ranges.
	NormalizableDistance(Instances data)	Initializes the distance function and automatically initializes the ranges.
	RelationalAttributeInfo(Instances header)	Constructs the information object based on the given parameter.
	RelationalLocator(Instances data)	Initializes the RelationalLocator with the given data.
	RelationalLocator(Instances data, int[] indices)	Initializes the RelationalLocator with the given data.
	RelationalLocator(Instances data, int fromIndex, int toIndex)	Initializes the RelationalLocator with the given data.
	StringLocator(Instances data)	initializes the StringLocator with the given data
	StringLocator(Instances data, int[] indices)	Initializes the AttributeLocator with the given data.
	StringLocator(Instances data, int fromIndex, int toIndex)	Initializes the StringLocator with the given data.

Uses of Instances in weka.core.converters

Methods in weka.core.converters that return Instances

Modifier and Type	Method	Description
Instances	ArffLoader.ArffReader.getData()	Returns the data that was read
abstract Instances	AbstractLoader.getDataSet()
Instances	ArffLoader.getDataSet()	Return the full data set.
Instances	C45Loader.getDataSet()	Return the full data set.
Instances	ConverterUtils.DataSource.getDataSet()	returns the full dataset, can be null in case of an error.
Instances	ConverterUtils.DataSource.getDataSet(int classIndex)	returns the full dataset with the specified class index set, can be null in case of an error.
Instances	CSVLoader.getDataSet()
Instances	DatabaseLoader.getDataSet()	Return the full data set in batch mode (header and all intances at once).
Instances	JSONLoader.getDataSet()	Return the full data set.
Instances	LibSVMLoader.getDataSet()	Return the full data set.
Instances	Loader.getDataSet()	Return the full data set.
Instances	MatlabLoader.getDataSet()	Return the full data set.
Instances	SerializedInstancesLoader.getDataSet()	Return the full data set.
Instances	SVMLightLoader.getDataSet()	Return the full data set.
Instances	TextDirectoryLoader.getDataSet()	Return the full data set.
Instances	XRFFLoader.getDataSet()	Return the full data set.
Instances	AbstractSaver.getInstances()	Gets instances that should be stored.
abstract Instances	AbstractLoader.getStructure()
Instances	ArffLoader.ArffReader.getStructure()	Returns the header format
Instances	ArffLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	C45Loader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	ConverterUtils.DataSource.getStructure()	returns the structure of the data.
Instances	ConverterUtils.DataSource.getStructure(int classIndex)	returns the structure of the data, with the defined class index.
Instances	CSVLoader.getStructure()
Instances	DatabaseLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	JSONLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	LibSVMLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	Loader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	MatlabLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	SerializedInstancesLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	SVMLightLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	TextDirectoryLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
Instances	XRFFLoader.getStructure()	Determines and returns (if possible) the structure (internally the header) of the data set as an empty set of instances.
static Instances	ConverterUtils.DataSource.read(InputStream stream)	convencience method for loading a dataset in batch mode from a stream.
static Instances	ConverterUtils.DataSource.read(String location)	convencience method for loading a dataset in batch mode.
static Instances	ConverterUtils.DataSource.read(Loader loader)	convencience method for loading a dataset in batch mode.

Methods in weka.core.converters with parameters of type Instances

Modifier and Type	Method	Description
abstract Instance	AbstractLoader.getNextInstance(Instances structure)
Instance	ArffLoader.getNextInstance(Instances structure)	Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get.
Instance	C45Loader.getNextInstance(Instances structure)	Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get.
Instance	CSVLoader.getNextInstance(Instances structure)
Instance	DatabaseLoader.getNextInstance(Instances structure)	Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get.
Instance	JSONLoader.getNextInstance(Instances structure)	JSONLoader is unable to process a data set incrementally.
Instance	LibSVMLoader.getNextInstance(Instances structure)	LibSVmLoader is unable to process a data set incrementally.
Instance	Loader.getNextInstance(Instances structure)	Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get.
Instance	MatlabLoader.getNextInstance(Instances structure)	MatlabLoader is unable to process a data set incrementally.
Instance	SerializedInstancesLoader.getNextInstance(Instances structure)	Read the data set incrementally---get the next instance in the data set or returns null if there are no more instances to get.
Instance	SVMLightLoader.getNextInstance(Instances structure)	SVMLightLoader is unable to process a data set incrementally.
Instance	TextDirectoryLoader.getNextInstance(Instances structure)	Process input directories/files incrementally.
Instance	XRFFLoader.getNextInstance(Instances structure)	XRFFLoader is unable to process a data set incrementally.
boolean	ConverterUtils.DataSource.hasMoreElements(Instances structure)	returns whether there are more Instance objects in the data.
Instance	ConverterUtils.DataSource.nextElement(Instances dataset)	returns the next element and sets the specified dataset, null if none available.
Instance	ArffLoader.ArffReader.readInstance(Instances structure)	Reads a single instance using the tokenizer and returns it.
Instance	ArffLoader.ArffReader.readInstance(Instances structure, boolean flag)	Reads a single instance using the tokenizer and returns it.
void	AbstractSaver.setInstances(Instances instances)	Sets instances that should be stored.
void	JSONSaver.setInstances(Instances instances)	Sets instances that should be stored.
void	LibSVMSaver.setInstances(Instances instances)	Sets instances that should be stored.
void	Saver.setInstances(Instances instances)	Sets the instances to be saved
void	SVMLightSaver.setInstances(Instances instances)	Sets instances that should be stored.
void	XRFFSaver.setInstances(Instances instances)	Sets instances that should be stored.
int	AbstractSaver.setStructure(Instances headerInfo)	Sets the strcuture of the instances for the first step of incremental saving.
static void	ConverterUtils.DataSink.write(OutputStream stream, Instances data)	writes the data to the given stream (always in ARFF format).
static void	ConverterUtils.DataSink.write(String filename, Instances data)	writes the data to the given file.
static void	ConverterUtils.DataSink.write(Saver saver, Instances data)	writes the data via the given saver.
void	ConverterUtils.DataSink.write(Instances data)	writes the given data either via the saver or to the defined output stream (depending on the constructor).

Constructors in weka.core.converters with parameters of type Instances

Modifier	Constructor	Description
	ArffReader(Reader reader, Instances template, int lines, int capacity, boolean batch, String... fieldSepAndEnclosures)	Initializes the reader without reading the header according to the specified template.
	ArffReader(Reader reader, Instances template, int lines, int capacity, String... fieldSepAndEnclosures)	Initializes the reader without reading the header according to the specified template.
	ArffReader(Reader reader, Instances template, int lines, String... fieldSepAndEnclosures)	Reads the data without header according to the specified template.
	DataSource(Instances inst)	Initializes the datasource with the given dataset.

Uses of Instances in weka.core.expressionlanguage.weka

Constructors in weka.core.expressionlanguage.weka with parameters of type Instances

Modifier	Constructor	Description
	InstancesHelper(Instances dataset)	Constructs an InstancesHelper for the given dataset.
	InstancesHelper(Instances dataset, boolean retainData)	Constructs an InstancesHelper for the given dataset.

Uses of Instances in weka.core.json

Methods in weka.core.json that return Instances

Modifier and Type	Method	Description
static Instances	JSONInstances.toHeader(JSONNode json)	Turns a JSON object, if possible, into an Instances object (only header).
static Instances	JSONInstances.toInstances(JSONNode json)	Turns a JSON object, if possible, into an Instances object.

Methods in weka.core.json with parameters of type Instances

Modifier and Type	Method	Description
static JSONNode	JSONInstances.toJSON(Instances inst)	Turns the Instances object into a JSON object.

Uses of Instances in weka.core.neighboursearch

Methods in weka.core.neighboursearch that return Instances

Modifier and Type	Method	Description
Instances	NearestNeighbourSearch.getInstances()	returns the instances currently set.
Instances	BallTree.kNearestNeighbours(Instance target, int k)	Returns k nearest instances in the current neighbourhood to the supplied instance.
Instances	CoverTree.kNearestNeighbours(Instance target, int k)	Returns k-NNs of a given target instance, from among the previously supplied training instances (supplied through setInstances method) P.S.: May return more than k-NNs if more one instances have the same distance to the target as the kth NN.
Instances	FilteredNeighbourSearch.kNearestNeighbours(Instance target, int k)	Returns the nearest neighbours for the given instance based on distance measured in the filtered space.
Instances	KDTree.kNearestNeighbours(Instance target, int k)	Returns the k nearest neighbours of the supplied instance.
Instances	LinearNNSearch.kNearestNeighbours(Instance target, int kNN)	Returns k nearest instances in the current neighbourhood to the supplied instance.
abstract Instances	NearestNeighbourSearch.kNearestNeighbours(Instance target, int k)	Returns k nearest instances in the current neighbourhood to the supplied instance.

Methods in weka.core.neighboursearch with parameters of type Instances

Modifier and Type	Method	Description
void	KDTree.assignSubToCenters(KDTreeNode node, Instances centers, int[] centList, int[] assignments)	Assigns instances of this node to center.
void	KDTree.centerInstances(Instances centers, int[] assignments, double pc)	Assigns instances to centers using KDTree.
void	BallTree.setInstances(Instances insts)	Builds the BallTree based on the given set of instances.
void	CoverTree.setInstances(Instances instances)	Builds the Cover Tree on the given set of instances.
void	FilteredNeighbourSearch.setInstances(Instances data)	Sets the instances to build the filtering model from.
void	KDTree.setInstances(Instances instances)	Builds the KDTree on the given set of instances.
void	LinearNNSearch.setInstances(Instances insts)	Sets the instances comprising the current neighbourhood.
void	NearestNeighbourSearch.setInstances(Instances insts)	Sets the instances.

Constructors in weka.core.neighboursearch with parameters of type Instances

Modifier	Constructor	Description
	BallTree(Instances insts)	Creates a new instance of BallTree.
	KDTree(Instances insts)	Creates a new instance of KDTree.
	LinearNNSearch(Instances insts)	Constructor that uses the supplied set of instances.
	NearestNeighbourSearch(Instances insts)	Constructor.

Uses of Instances in weka.core.neighboursearch.balltrees

Methods in weka.core.neighboursearch.balltrees with parameters of type Instances

Modifier and Type	Method	Description
static Instance	BallNode.calcCentroidPivot(int[] instList, Instances insts)	Calculates the centroid pivot of a node.
static Instance	BallNode.calcCentroidPivot(int start, int end, int[] instList, Instances insts)	Calculates the centroid pivot of a node.
static Instance	BallNode.calcPivot(BallNode child1, BallNode child2, Instances insts)	Calculates the centroid pivot of a node based on its two child nodes (if merging two nodes).
Instance	BottomUpConstructor.calcPivot(weka.core.neighboursearch.balltrees.BottomUpConstructor.TempNode node1, weka.core.neighboursearch.balltrees.BottomUpConstructor.TempNode node2, Instances insts)	Calculates the centroid pivot of a node based on its two child nodes.
Instance	MiddleOutConstructor.calcPivot(weka.core.neighboursearch.balltrees.MiddleOutConstructor.MyIdxList list1, weka.core.neighboursearch.balltrees.MiddleOutConstructor.MyIdxList list2, Instances insts)	Calculates the centroid pivot of a node based on the list of points that it contains (tbe two lists of its children are provided).
Instance	MiddleOutConstructor.calcPivot(weka.core.neighboursearch.balltrees.MiddleOutConstructor.TempNode node1, weka.core.neighboursearch.balltrees.MiddleOutConstructor.TempNode node2, Instances insts)	/** Calculates the centroid pivot of a node based on its two child nodes (if merging two nodes).
static double	BallNode.calcRadius(int[] instList, Instances insts, Instance pivot, DistanceFunction distanceFunction)	Calculates the radius of node.
static double	BallNode.calcRadius(int start, int end, int[] instList, Instances insts, Instance pivot, DistanceFunction distanceFunction)	Calculates the radius of a node.
double	MiddleOutConstructor.calcRadius(weka.core.neighboursearch.balltrees.MiddleOutConstructor.MyIdxList list1, weka.core.neighboursearch.balltrees.MiddleOutConstructor.MyIdxList list2, Instance pivot, Instances insts)	Calculates the radius of a node based on the list of points that it contains (the two lists of its children are provided).
void	BallSplitter.setInstances(Instances inst)	Sets the training instances on which the tree is (or is to be) built.
void	BallTreeConstructor.setInstances(Instances inst)	Sets the instances on which the tree is to be built.
void	MiddleOutConstructor.setInstances(Instances insts)	Sets the instances on which the tree is to be built.

Constructors in weka.core.neighboursearch.balltrees with parameters of type Instances

Modifier	Constructor	Description
	BallSplitter(int[] instList, Instances insts, EuclideanDistance e)	Creates a new instance of BallSplitter.
	MedianDistanceFromArbitraryPoint(int[] instList, Instances insts, EuclideanDistance e)	Constructor.
	MedianOfWidestDimension(int[] instList, Instances insts, EuclideanDistance e)	Constructor.
	PointsClosestToFurthestChildren(int[] instList, Instances insts, EuclideanDistance e)	Constructor.

Uses of Instances in weka.core.neighboursearch.kdtrees

Methods in weka.core.neighboursearch.kdtrees with parameters of type Instances

Modifier and Type	Method	Description
void	KDTreeNodeSplitter.setInstances(Instances inst)	Sets the training instances on which the tree is (or is to be) built.

Constructors in weka.core.neighboursearch.kdtrees with parameters of type Instances

Modifier	Constructor	Description
	KDTreeNodeSplitter(int[] instList, Instances insts, EuclideanDistance e)	Creates a new instance of KDTreeNodeSplitter.

Uses of Instances in weka.core.pmml

Methods in weka.core.pmml that return Instances

Modifier and Type	Method	Description
Instances	MiningSchema.getFieldsAsInstances()	Get the all the fields (both mining schema and derived) as Instances.
Instances	MiningSchema.getMiningSchemaAsInstances()	Get the mining schema fields as an Instances object.

Methods in weka.core.pmml with parameters of type Instances

Modifier and Type	Method	Description
static String	PMMLFactory.applyClassifier(PMMLModel model, Instances test)
void	DerivedFieldMetaInfo.setFieldDefs(Instances fields)	Upadate the field definitions for this derived field
String	PMMLProducer.toPMML(Instances train)	Produce a PMML representation

Constructors in weka.core.pmml with parameters of type Instances

Modifier	Constructor	Description
	MappingInfo(Instances dataSet, MiningSchema miningSchema, Logger log)
	MiningSchema(Element model, Instances dataDictionary, weka.core.pmml.TransformationDictionary transDict)	Constructor for MiningSchema.

Uses of Instances in weka.core.xml

Methods in weka.core.xml that return Instances

Modifier and Type	Method	Description
Instances	XMLInstances.getInstances()	returns the current instances, either the ones that were set or the ones that were generated from the XML structure.

Methods in weka.core.xml with parameters of type Instances

Modifier and Type	Method	Description
void	XMLInstances.setInstances(Instances data)	builds up the XML structure based on the given data

Constructors in weka.core.xml with parameters of type Instances

Modifier	Constructor	Description
	XMLInstances(Instances data)	generates the XML structure based on the given data

Uses of Instances in weka.datagenerators

Methods in weka.datagenerators that return Instances

Modifier and Type	Method	Description
Instances	DataGenerator.defineDataFormat()	Constructs the Instances object representing the format of the generated data.
abstract Instances	DataGenerator.generateExamples()	Generates all examples of the dataset.
Instances	DataGenerator.getDatasetFormat()	Gets the format of the dataset that is to be generated.

Methods in weka.datagenerators with parameters of type Instances

Modifier and Type	Method	Description
void	DataGenerator.setDatasetFormat(Instances newFormat)	Sets the format of the dataset that is to be generated.

Constructors in weka.datagenerators with parameters of type Instances

Modifier	Constructor	Description
	Test(int i, double s, Instances dataset)	Constructor
	Test(int i, double s, Instances dataset, boolean n)	Constructor

Uses of Instances in weka.datagenerators.classifiers.classification

Methods in weka.datagenerators.classifiers.classification that return Instances

Modifier and Type	Method	Description
Instances	Agrawal.defineDataFormat()	Initializes the format for the dataset produced.
Instances	BayesNet.defineDataFormat()	Initializes the format for the dataset produced.
Instances	LED24.defineDataFormat()	Initializes the format for the dataset produced.
Instances	RandomRBF.defineDataFormat()	Initializes the format for the dataset produced.
Instances	RDG1.defineDataFormat()	Initializes the format for the dataset produced.
Instances	Agrawal.generateExamples()	Generates all examples of the dataset.
Instances	BayesNet.generateExamples()	Generates all examples of the dataset.
Instances	LED24.generateExamples()	Generates all examples of the dataset.
Instances	RandomRBF.generateExamples()	Generates all examples of the dataset.
Instances	RDG1.generateExamples()	Generate all examples of the dataset.
Instances	RDG1.generateExamples(int num, Random random, Instances format)	Generate all examples of the dataset.

Methods in weka.datagenerators.classifiers.classification with parameters of type Instances

Modifier and Type	Method	Description
Instances	RDG1.generateExamples(int num, Random random, Instances format)	Generate all examples of the dataset.

Uses of Instances in weka.datagenerators.classifiers.regression

Methods in weka.datagenerators.classifiers.regression that return Instances

Modifier and Type	Method	Description
Instances	Expression.defineDataFormat()	Initializes the format for the dataset produced.
Instances	MexicanHat.defineDataFormat()	Initializes the format for the dataset produced.
Instances	Expression.generateExamples()	Generates all examples of the dataset.
Instances	MexicanHat.generateExamples()	Generates all examples of the dataset.

Uses of Instances in weka.datagenerators.clusterers

Methods in weka.datagenerators.clusterers that return Instances

Modifier and Type	Method	Description
Instances	BIRCHCluster.defineDataFormat()	Initializes the format for the dataset produced.
Instances	SubspaceCluster.defineDataFormat()	Initializes the format for the dataset produced.
Instances	BIRCHCluster.generateExamples()	Generate all examples of the dataset.
Instances	BIRCHCluster.generateExamples(Random random, Instances format)	Generate all examples of the dataset.
Instances	SubspaceCluster.generateExamples()	Generate all examples of the dataset.

Methods in weka.datagenerators.clusterers with parameters of type Instances

Modifier and Type	Method	Description
Instances	BIRCHCluster.generateExamples(Random random, Instances format)	Generate all examples of the dataset.

Uses of Instances in weka.estimators

Methods in weka.estimators that return Instances

Modifier and Type	Method	Description
static Instances	EstimatorUtils.getInstancesFromClass(Instances data, int classIndex, double classValue)	Returns a dataset that contains of all instances of a certain class value.
static Instances	EstimatorUtils.getInstancesFromValue(Instances data, int index, double v)	Returns a dataset that contains of all instances of a certain value for the given attribute.

Methods in weka.estimators with parameters of type Instances

Modifier and Type	Method	Description
void	Estimator.addValues(Instances data, int attrIndex)	Initialize the estimator with a new dataset.
void	Estimator.addValues(Instances data, int attrIndex, double min, double max, double factor)	Initialize the estimator with all values of one attribute of a dataset.
void	Estimator.addValues(Instances data, int attrIndex, int classIndex, int classValue)	Initialize the estimator using only the instances of one class.
void	Estimator.addValues(Instances data, int attrIndex, int classIndex, int classValue, double min, double max)	Initialize the estimator using only the instances of one class.
static void	Estimator.buildEstimator(Estimator est, Instances instances, int attrIndex, int classIndex, int classValueIndex, boolean isIncremental)
static double	EstimatorUtils.findMinDistance(Instances inst, int attrIndex)	Find the minimum distance between values.
static Instances	EstimatorUtils.getInstancesFromClass(Instances data, int classIndex, double classValue)	Returns a dataset that contains of all instances of a certain class value.
static Vector<Object>	EstimatorUtils.getInstancesFromClass(Instances data, int attrIndex, int classIndex, double classValue, Instances workData)	Returns a dataset that contains all instances of a certain class value.
static Instances	EstimatorUtils.getInstancesFromValue(Instances data, int index, double v)	Returns a dataset that contains of all instances of a certain value for the given attribute.
static int	CheckEstimator.getMinMax(Instances inst, int attrIndex, double[] minMax)	Find the minimum and the maximum of the attribute and return it in the last parameter..
static int	EstimatorUtils.getMinMax(Instances inst, int attrIndex, double[] minMax)	Find the minimum and the maximum of the attribute and return it in the last parameter.
void	Estimator.testCapabilities(Instances data, int attrIndex)	Test if the estimator can handle the data.

Uses of Instances in weka.experiment

Methods in weka.experiment that return Instances

Modifier and Type	Method	Description
Instances	PairedTTester.getInstances()	Get the value of Instances.
Instances	Tester.getInstances()	Get the value of Instances.
Instances	InstanceQuery.retrieveInstances()	Makes a database query using the query set through the -Q option to convert a table into a set of instances
Instances	InstanceQuery.retrieveInstances(String query)	Makes a database query to convert a table into a set of instances
static Instances	InstanceQuery.retrieveInstances(InstanceQueryAdapter adapter, ResultSet rs)

Methods in weka.experiment with parameters of type Instances

Modifier and Type	Method	Description
Object[]	ClassifierSplitEvaluator.getResult(Instances train, Instances test)	Gets the results for the supplied train and test datasets.
Object[]	CostSensitiveClassifierSplitEvaluator.getResult(Instances train, Instances test)	Gets the results for the supplied train and test datasets.
Object[]	DensityBasedClustererSplitEvaluator.getResult(Instances train, Instances test)	Gets the results for the supplied train and test datasets.
Object[]	RegressionSplitEvaluator.getResult(Instances train, Instances test)	Gets the results for the supplied train and test datasets.
Object[]	SplitEvaluator.getResult(Instances train, Instances test)	Gets the results for the supplied train and test datasets.
void	AveragingResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	CrossValidationResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	DatabaseResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	ExplicitTestsetResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	LearningRateResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	PairedTTester.setInstances(Instances newInstances)	Set the value of Instances.
void	RandomSplitResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	ResultProducer.setInstances(Instances instances)	Sets the dataset that results will be obtained for.
void	Tester.setInstances(Instances newInstances)	Set the value of Instances.

Uses of Instances in weka.filters

Methods in weka.filters that return Instances

Modifier and Type	Method	Description
Instances	Filter.getCopyOfInputFormat()	Gets a copy of just the structure of the input format instances.
Instances	Filter.getOutputFormat()	Gets the format of the output instances.
static Instances	Filter.useFilter(Instances data, Filter filter)	Filters an entire set of instances through a filter and returns the new set.

Methods in weka.filters with parameters of type Instances

Modifier and Type	Method	Description
Capabilities	Filter.getCapabilities(Instances data)	Returns the Capabilities of this filter, customized based on the data.
boolean	SimpleBatchFilter.input(Instances instances)	A version of the input(Instance) method that enables input of a whole dataset represented as an Instances object into the filter.
boolean	AllFilter.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Filter.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RenameRelation.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	SimpleFilter.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
String	AllFilter.toSource(String className, Instances data)	Returns a string that describes the filter as source.
String	Sourcable.toSource(String className, Instances data)	Returns a string that describes the filter as source.
static Instances	Filter.useFilter(Instances data, Filter filter)	Filters an entire set of instances through a filter and returns the new set.
static String	Filter.wekaStaticWrapper(Sourcable filter, String className, Instances input, Instances output)	generates source code from the filter

Uses of Instances in weka.filters.supervised.attribute

Methods in weka.filters.supervised.attribute with parameters of type Instances

Modifier and Type	Method	Description
boolean	ClassOrder.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Discretize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	NominalToBinary.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	PartitionMembership.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.

Uses of Instances in weka.filters.supervised.instance

Methods in weka.filters.supervised.instance with parameters of type Instances

Modifier and Type	Method	Description
boolean	Resample.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	SpreadSubsample.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	StratifiedRemoveFolds.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.

Uses of Instances in weka.filters.unsupervised.attribute

Methods in weka.filters.unsupervised.attribute that return Instances

Modifier and Type	Method	Description
Instances	PotentialClassIgnorer.getOutputFormat()	Gets the format of the output instances.

Methods in weka.filters.unsupervised.attribute with parameters of type Instances

Modifier and Type	Method	Description
void	AddNoise.addNoise(Instances instances, int seed, int percent, int attIndex, boolean useMissing)	add noise to the dataset a given percentage of the instances are changed in the way that a set of instances are randomly selected using seed.
Capabilities	AddCluster.getCapabilities(Instances data)	Returns the Capabilities of this filter, makes sure that the class is never set (for the clusterer).
Capabilities	ClusterMembership.getCapabilities(Instances data)	Returns the Capabilities of this filter, makes sure that the class is never set (for the clusterer).
void	KernelFilter.initFilter(Instances instances)	initializes the filter with the given dataset, i.e., the kernel gets built.
boolean	AbstractTimeSeries.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Add.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddCluster.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddExpression.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddID.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddNoise.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddUserFields.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	AddValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Center.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	ChangeDateFormat.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	ClusterMembership.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Copy.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Discretize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	FirstOrder.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	MakeIndicator.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	MathExpression.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	MergeManyValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	MergeTwoValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	NominalToBinary.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	NominalToString.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Normalize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	NumericToBinary.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	NumericTransform.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Obfuscate.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	OrdinalToNumeric.setInputFormat(Instances instancesInfo)	Sets the format of the input instances.
boolean	PKIDiscretize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	PotentialClassIgnorer.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	PrincipalComponents.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RandomProjection.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Remove.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveType.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveUseless.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RenameNominalValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Reorder.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	ReplaceMissingValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	ReplaceMissingWithUserConstant.setInputFormat(Instances instanceInfo)
boolean	Standardize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	StringToNominal.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	StringToWordVector.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	SwapValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	TimeSeriesDelta.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	TimeSeriesTranslate.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
String	Center.toSource(String className, Instances data)	Returns a string that describes the filter as source.
String	Normalize.toSource(String className, Instances data)	Returns a string that describes the filter as source.
String	ReplaceMissingValues.toSource(String className, Instances data)	Returns a string that describes the filter as source.
String	Standardize.toSource(String className, Instances data)	Returns a string that describes the filter as source.

Uses of Instances in weka.filters.unsupervised.instance

Methods in weka.filters.unsupervised.instance with parameters of type Instances

Modifier and Type	Method	Description
void	RemoveFrequentValues.determineValues(Instances inst)	determines the values to retain, it is always at least 1 and up to the maximum number of distinct values
boolean	NonSparseToSparse.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Randomize.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveFolds.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveFrequentValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveMisclassified.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemovePercentage.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveRange.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	RemoveWithValues.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	Resample.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	ReservoirSample.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.
boolean	SparseToNonSparse.setInputFormat(Instances instanceInfo)	Sets the format of the input instances.

Uses of Instances in weka.gui

Methods in weka.gui that return Instances

Modifier and Type	Method	Description
Instances	SetInstancesPanel.getInstances()	Gets the set of instances currently held by the panel.
Instances	ViewerDialog.getInstances()	returns the currently displayed instances

Methods in weka.gui with parameters of type Instances

Modifier and Type	Method	Description
void	AbstractPerspective.setInstances(Instances instances)	Set instances (if this perspective can use them)
void	AttributeListPanel.setInstances(Instances newInstances)	Sets the instances who's attribute names will be displayed.
void	AttributeSelectionPanel.setInstances(Instances newInstances)	Sets the instances who's attribute names will be displayed.
void	AttributeSummaryPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	AttributeVisualizationPanel.setInstances(Instances newins)	Sets the instances for use
void	InstancesSummaryPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	Perspective.setInstances(Instances instances)	Set instances (if this perspective can use them)
void	SetInstancesPanel.setInstances(Instances i)	Updates the set of instances that is currently held by the panel.
void	SetInstancesPanel.setInstances(Instances i, boolean showZeroInstancesAsUnknown)	Updates the set of instances that is currently held by the panel.
void	SimpleCLIPanel.setInstances(Instances instances)
void	ViewerDialog.setInstances(Instances inst)	sets the instances to display
int	ViewerDialog.showDialog(Instances inst)	Pops up the modal dialog and waits for Cancel or OK.

Uses of Instances in weka.gui.arffviewer

Methods in weka.gui.arffviewer that return Instances

Modifier and Type	Method	Description
Instances	ArffPanel.getInstances()	returns the instances of the panel, if none then NULL
Instances	ArffSortedTableModel.getInstances()	returns the data
Instances	ArffTableModel.getInstances()	returns the data

Methods in weka.gui.arffviewer with parameters of type Instances

Modifier and Type	Method	Description
void	ArffPanel.setInstances(Instances data)	displays the given instances, i.e.
void	ArffSortedTableModel.setInstances(Instances data)	sets the data
void	ArffTableModel.setInstances(Instances data)	sets the data

Constructors in weka.gui.arffviewer with parameters of type Instances

Modifier	Constructor	Description
	ArffPanel(Instances data)	initializes the panel with the given data
	ArffSortedTableModel(Instances data)	initializes the sorter w/o a model, but uses the given data to create a model from that
	ArffTableModel(Instances data)	initializes the model with the given data

Uses of Instances in weka.gui.beans

Methods in weka.gui.beans that return Instances

Modifier and Type	Method	Description
Instances	ClassAssigner.getConnectedFormat()	Returns the structure of the incoming instances (if any)
Instances	ClassValuePicker.getConnectedFormat()	Returns the structure of the incoming instances (if any)
Instances	FlowByExpression.getConnectedFormat()	Returns the structure of the incoming instances (if any)
Instances	Sorter.getConnectedFormat()	Returns the structure of the incoming instances (if any)
Instances	DataSetEvent.getDataSet()	Return the instances of the data set
Instances	SubstringLabelerRules.getInputStructure()	Get the input structure
Instances	SubstringLabelerRules.getOutputStructure()	Get the output structure
Instances	Associator.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	ClassAssigner.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	ClassValuePicker.getStructure(String eventName)
Instances	CrossValidationFoldMaker.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	FlowByExpression.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	IncrementalClassifierEvent.getStructure()	Get the instances structure (may be null if this is not a NEW_BATCH event)
Instances	InstanceEvent.getStructure()	Get the instances structure (may be null if this is not a FORMAT_AVAILABLE event)
Instances	Join.getStructure(String eventName)	Get the output instances structure given an input event type
Instances	Loader.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	Sorter.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	StructureProducer.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	TestSetMaker.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	TrainingSetMaker.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	TrainTestSplitMaker.getStructure(String eventName)	Get the structure of the output encapsulated in the named event.
Instances	TestSetEvent.getTestSet()	Get the test set instances
Instances	TrainingSetEvent.getTrainingSet()	Get the training instances

Methods in weka.gui.beans with parameters of type Instances

Modifier and Type	Method	Description
void	SubstringLabelerRules.SubstringLabelerMatchRule.init(Environment env, Instances structure)	Initialize this match rule by substituting any environment variables in the attributes, match and label strings.
void	SubstringReplacerRules.SubstringReplacerMatchRule.init(Environment env, Instances structure)	Initialize this match replace rule by substituting any environment variables in the attributes, match and replace strings.
static List<SubstringLabelerRules.SubstringLabelerMatchRule>	SubstringLabelerRules.matchRulesFromInternal(String matchDetails, Instances inputStructure, String statusMessagePrefix, Logger log, Environment env)	Get a list of match rules from an internally encoded match specification
static List<SubstringReplacerRules.SubstringReplacerMatchRule>	SubstringReplacerRules.matchRulesFromInternal(String matchReplaceDetails, Instances inputStructure, String statusMessagePrefix, Logger log, Environment env)	Get a list of match rules from an internally encoded match specification
static void	SerializedModelSaver.saveBinary(File saveTo, Object model, Instances header)	Save a model in binary form.
static void	SerializedModelSaver.saveKOML(File saveTo, Object model, Instances header)	Save a model in KOML deep object serialized XML form.
static void	SerializedModelSaver.saveXStream(File saveTo, Object model, Instances header)	Save a model in XStream deep object serialized XML form.
void	AttributeSummarizer.setInstances(Instances inst)	Set instances for this bean.
void	DataVisualizer.setInstances(Instances inst)	Set instances for this bean.
void	KnowledgeFlowApp.KFPerspective.setInstances(Instances insts)	Set instances (if the perspective accepts them)
void	KnowledgeFlowApp.MainKFPerspective.setInstances(Instances insts)
void	ScatterPlotMatrix.setInstances(Instances inst)	Set instances for this bean.
void	SQLViewerPerspective.setInstances(Instances insts)	Set instances (if the perspective accepts them)
void	IncrementalClassifierEvent.setStructure(Instances structure)	Set the instances structure
void	InstanceEvent.setStructure(Instances structure)	Set the instances structure

Method parameters in weka.gui.beans with type arguments of type Instances

Modifier and Type	Method	Description
BufferedImage	OffscreenChartRenderer.renderHistogram(int width, int height, List<Instances> series, String attsToPlot, List<String> optionalArgs)	Render histogram(s) (numeric attribute) or bar chart(s) (nominal attribute).
BufferedImage	WekaOffscreenChartRenderer.renderHistogram(int width, int height, List<Instances> series, String attToPlot, List<String> optionalArgs)	Render histogram(s) (numeric attribute) or pie chart (nominal attribute).
BufferedImage	OffscreenChartRenderer.renderXYLineChart(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs)	Render an XY line chart
BufferedImage	WekaOffscreenChartRenderer.renderXYLineChart(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs)	Render an XY line chart
BufferedImage	OffscreenChartRenderer.renderXYScatterPlot(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs)	Render an XY scatter plot
BufferedImage	WekaOffscreenChartRenderer.renderXYScatterPlot(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs)	Render an XY scatter plot

Constructors in weka.gui.beans with parameters of type Instances

Modifier	Constructor	Description
	DataSetEvent(Object source, Instances dataSet)
	IncrementalClassifierEvent(Object source, Classifier scheme, Instances structure)	Creates a new incremental classifier event that encapsulates header information and classifier.
	InstanceEvent(Object source, Instances structure)	Creates a new InstanceEvent instance which encapsulates header information only.
	SubstringLabelerRules(String matchDetails, String newAttName, boolean consumeNonMatching, boolean nominalBinary, Instances inputStructure, String statusMessagePrefix, Logger log, Environment env)	Constructor
	SubstringLabelerRules(String matchDetails, String newAttName, Instances inputStructure)	Constructor.
	SubstringReplacerRules(String matchDetails, Instances inputStructure)	Constructor.
	SubstringReplacerRules(String matchDetails, Instances inputStructure, String statusMessagePrefix, Logger log, Environment env)	Constructor
	TestSetEvent(Object source, Instances testSet)	Creates a new TestSetEvent
	TestSetEvent(Object source, Instances testSet, int setNum, int maxSetNum)	Creates a new TestSetEvent
	TestSetEvent(Object source, Instances testSet, int runNum, int maxRunNum, int setNum, int maxSetNum)	Creates a new TestSetEvent
	TrainingSetEvent(Object source, Instances trainSet)	Creates a new TrainingSetEvent
	TrainingSetEvent(Object source, Instances trainSet, int setNum, int maxSetNum)	Creates a new TrainingSetEvent
	TrainingSetEvent(Object source, Instances trainSet, int runNum, int maxRunNum, int setNum, int maxSetNum)	Creates a new TrainingSetEvent

Uses of Instances in weka.gui.boundaryvisualizer

Methods in weka.gui.boundaryvisualizer that return Instances

Modifier and Type	Method	Description
Instances	BoundaryVisualizer.getInstances()	Get the training instances

Methods in weka.gui.boundaryvisualizer with parameters of type Instances

Modifier and Type	Method	Description
void	DataGenerator.buildGenerator(Instances inputInstances)	Build the data generator
void	KDDataGenerator.buildGenerator(Instances inputInstances)	Initialize the generator using the supplied instances
static void	BoundaryVisualizer.createNewVisualizerWindow(Classifier classifier, Instances instances)	Creates a new GUI window with all of the BoundaryVisualizer trappings,
void	BoundaryVisualizer.setInstances(Instances inst)	Set the training instances
void	RemoteBoundaryVisualizerSubTask.setInstances(Instances i)	Set the training data
void	BoundaryPanel.setTrainingData(Instances trainingData)	Set the training data to use

Uses of Instances in weka.gui.experiment

Methods in weka.gui.experiment with parameters of type Instances

Modifier and Type	Method	Description
void	ResultsPanel.setInstances(Instances newInstances)	Sets up the panel with a new set of instances, attempting to guess the correct settings for various columns.

Uses of Instances in weka.gui.explorer

Methods in weka.gui.explorer that return Instances

Modifier and Type	Method	Description
Instances	AbstractPlotInstances.getInstances()	Returns the training data.
Instances	ClassifierPanel.getInstances()	Get the current set of instances
Instances	DataGeneratorPanel.getInstances()	returns the generated instances, null if the process was cancelled.
Instances	PreprocessPanel.getInstances()	Gets the working set of instances.
Instances	AbstractPlotInstances.getPlotInstances()	Returns the generated plot instances.

Methods in weka.gui.explorer with parameters of type Instances

Modifier and Type	Method	Description
void	ClassifierErrorsPlotInstances.process(Instances batch, double[][] predictions, Evaluation eval)
void	ClassifierPanel.saveClassifier(String name, Classifier classifier, Instances trainHeader)	Saves the currently selected classifier.
void	PreprocessPanel.saveInstancesToFile(AbstractFileSaver saver, Instances inst)	saves the data with the specified saver
void	AbstractPlotInstances.setInstances(Instances value)	Sets the instances that are the basis for the plot instances.
void	AssociationsPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	AttributeSelectionPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	ClassifierPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	ClustererPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	Explorer.ExplorerPanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	PreprocessPanel.setInstances(Instances inst)	Tells the panel to use a new base set of instances.
void	VisualizePanel.setInstances(Instances instances)
static Evaluation	ClassifierPanel.setupEval(Evaluation eval, Classifier classifier, Instances inst, CostMatrix costMatrix, ClassifierErrorsPlotInstances plotInstances, AbstractOutput classificationOutput, boolean onlySetPriors)	Configures an evaluation object with respect to a classifier, cost matrix, output and plotting.
static Evaluation	ClassifierPanel.setupEval(Evaluation eval, Classifier classifier, Instances inst, CostMatrix costMatrix, ClassifierErrorsPlotInstances plotInstances, AbstractOutput classificationOutput, boolean onlySetPriors, boolean collectPredictions)	Configures an evaluation object with respect to a classifier, cost matrix, output and plotting.

Uses of Instances in weka.gui.knowledgeflow

Methods in weka.gui.knowledgeflow with parameters of type Instances

Modifier and Type	Method	Description
void	AttributeSummaryPerspective.setInstances(Instances instances)	Set the instances to visualize
void	AttributeSummaryPerspective.setInstances(Instances instances, Settings settings)	Set the instances to visualize
void	MainKFPerspective.setInstances(Instances instances)	Set instances (if this perspective can use them)
void	ScatterPlotMatrixPerspective.setInstances(Instances instances)	Set the instances to use

Uses of Instances in weka.gui.streams

Methods in weka.gui.streams that return Instances

Modifier and Type	Method	Description
Instances	InstanceJoiner.outputFormat()	Gets the format of the output instances.
Instances	InstanceLoader.outputFormat()
Instances	InstanceProducer.outputFormat()

Methods in weka.gui.streams with parameters of type Instances

Modifier and Type	Method	Description
void	InstanceCounter.inputFormat(Instances instanceInfo)
boolean	InstanceJoiner.inputFormat(Instances instanceInfo)	Sets the format of the input instances.
void	InstanceSavePanel.inputFormat(Instances instanceInfo)
void	InstanceTable.inputFormat(Instances instanceInfo)
void	InstanceViewer.inputFormat(Instances instanceInfo)

Uses of Instances in weka.gui.treevisualizer

Methods in weka.gui.treevisualizer that return Instances

Modifier and Type	Method	Description
Instances	Node.getInstances()	This will return the Instances object related to this node.

Uses of Instances in weka.gui.visualize

Methods in weka.gui.visualize that return Instances

Modifier and Type	Method	Description
Instances	VisualizePanel.getInstances()	Get the master plot's instances
Instances	VisualizePanelEvent.getInstances1()
Instances	VisualizePanelEvent.getInstances2()
Instances	PlotData2D.getPlotInstances()	Returns the instances for this plot

Methods in weka.gui.visualize that return types with arguments of type Instances

Modifier and Type	Method	Description
Vector<Instances>	InstanceInfo.getInfoData()	Returns the underlying data.
Vector<Instances>	InstanceInfoFrame.getInfoData()	Returns the underlying data.

Methods in weka.gui.visualize with parameters of type Instances

Modifier and Type	Method	Description
void	AttributePanel.setInstances(Instances ins)	This sets the instances to be drawn into the attribute panel
void	ClassPanel.setInstances(Instances insts)	Set the instances.
void	MatrixPanel.setInstances(Instances newInst)	This method changes the Instances object of this class to a new one.
void	Plot2D.setInstances(Instances inst)	Sets the master plot from a set of instances
void	VisualizePanel.setInstances(Instances inst)	Tells the panel to use a new set of instances.
void	ThresholdVisualizePanel.setUpComboBoxes(Instances inst)	This overloads VisualizePanel's setUpComboBoxes to add ActionListeners to watch for when the X/Y Axis comboboxes are changed.
void	VisualizePanel.setUpComboBoxes(Instances inst)	initializes the comboboxes based on the data

Method parameters in weka.gui.visualize with type arguments of type Instances

Modifier and Type	Method	Description
void	InstanceInfo.setInfoData(Vector<Instances> data)	Sets the underlying data.
void	InstanceInfoFrame.setInfoData(Vector<Instances> data)	Sets the underlying data.

Constructors in weka.gui.visualize with parameters of type Instances

Modifier	Constructor	Description
	PlotData2D(Instances insts)	Construct a new PlotData2D using the supplied instances
	VisualizePanelEvent(ArrayList<ArrayList<Double>> ar, Instances i, Instances i2, int at1, int at2)	This constructor creates the event with all the parameters set.

Uses of Instances in weka.gui.visualize.plugins

Methods in weka.gui.visualize.plugins with parameters of type Instances

Modifier and Type	Method	Description
JMenuItem	ErrorVisualizePlugin.getVisualizeMenuItem(Instances predInst)	Get a JMenu or JMenuItem which contain action listeners that perform the visualization of the classifier errors.

Uses of Instances in weka.knowledgeflow

Methods in weka.knowledgeflow that return Instances

Modifier and Type	Method	Description
Instances	StepManager.getIncomingStructureForConnectionType(String connectionName)	Attempt to retrieve the structure (as a header-only set of instances) for the named incoming connection type.
Instances	StepManager.getIncomingStructureForConnectionType(String connectionName, Environment env)	Attempt to retrieve the structure (as a header-only set of instances) for the named incoming connection type.
Instances	StepManagerImpl.getIncomingStructureForConnectionType(String connectionName)	Attempt to get the incoming structure (as a header-only set of instances) for the named incoming connection type.
Instances	StepManagerImpl.getIncomingStructureForConnectionType(String connectionName, Environment env)	Attempt to retrieve the structure (as a header-only set of instances) for the named incoming connection type.
Instances	StepManager.getIncomingStructureFromStep(StepManager sourceStep, String connectionName)	Attempt to get the incoming structure (as a header-only set of instances) from the given managed step for the given connection type.
Instances	StepManagerImpl.getIncomingStructureFromStep(StepManager sourceStep, String connectionName)	Attempt to get the incoming structure (as a header-only set of instances) from the given managed step for the given connection type.

Uses of Instances in weka.knowledgeflow.steps

Methods in weka.knowledgeflow.steps that return Instances

Modifier and Type	Method	Description
Instances	Join.getFirstInputStructure()	Get the Instances structure being produced by the first input
Instances	MemoryBasedDataSource.getInstances()	Get the data to output from this step
Instances	Join.getSecondInputStructure()	Get the Instances structure being produced by the second input
Instances	Appender.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	Associator.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	BaseStep.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	BaseStep.outputStructureForConnectionType(String connectionName, Environment env)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	ClassAssigner.outputStructureForConnectionType(String connectionName)	Return the structure of data output by this step for a given incoming connection type
Instances	ClassValuePicker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	CrossValidationFoldMaker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	DataGenerator.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	DataGrid.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	ExecuteProcess.outputStructureForConnectionType(String connectionName)	Get, if possible, the outgoing instance structure for the supplied incoming connection type
Instances	Filter.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	FlowByExpression.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	InstanceStreamToBatchMaker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	Loader.outputStructureForConnectionType(String connectionName, Environment env)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	SetVariables.outputStructureForConnectionType(String connectionName)
Instances	Step.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	Step.outputStructureForConnectionType(String connectionName, Environment env)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	SubstringLabeler.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	SubstringReplacer.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	TestSetMaker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	TrainingSetMaker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.
Instances	TrainTestSplitMaker.outputStructureForConnectionType(String connectionName)	If possible, get the output structure for the named connection type as a header-only set of instances.

Methods in weka.knowledgeflow.steps with parameters of type Instances

Modifier and Type	Method	Description
void	FlowByExpression.BracketNode.init(Instances structure, Environment env)
void	FlowByExpression.ExpressionClause.init(Instances structure, Environment env)
void	FlowByExpression.ExpressionNode.init(Instances structure, Environment env)	Initialize the node
void	Sorter.SortRule.init(Environment env, Instances structure)	Initialize the rule
void	BoundaryPlotter.plotTrainingData(Instances trainingData)
void	MemoryBasedDataSource.setInstances(Instances instances)	Set the data to output from this step