Package weka.associations

Class NominalItem

java.lang.Object
weka.associations.Item
weka.associations.NominalItem
All Implemented Interfaces:
Serializable, Comparable<Item>
Direct Known Subclasses:
BinaryItem
public class NominalItem extends Item implements Serializable
Class that encapsulates a nominal item.
Version:
$Revision: 8034 $
Author:
Mark Hall (mhall{[at]}pentaho{[dot]}com)
See Also:

  • Constructor Details

    • NominalItem

      public NominalItem(Attribute att, int valueIndex) throws Exception
      Constructs a new NominalItem.
      Parameters:
      att - the attribute that backs the item.
      valueIndex - the index of the value for this item.
      Throws:
      Exception - if the NominalItem can't be constructed.

  • Method Details

    • getValueIndex

      public int getValueIndex()
      Get the value index for this item.
      Returns:
      the value index.

    • getItemValueAsString

      public String getItemValueAsString()
      Get this item's value as a String.
      Specified by:
      getItemValueAsString in class Item
      Returns:
      this item's value as a String.

    • getComparisonAsString

      public String getComparisonAsString()
      Get this item's comparison operator as a String.
      Specified by:
      getComparisonAsString in class Item
      Returns:
      this item's comparison operator as a String.

    • toString

      public String toString(boolean freq)
      A string representation of this item, (i.e. ). This default implementation just prints the attribute name and (optionally) frequency information.
      Overrides:
      toString in class Item
      Parameters:
      freq - true if the frequency should be included.
      Returns:
      a string representation of this item.

    • equals

      public boolean equals(Object compareTo)
      Equals. Just compares attribute and valueIndex.
      Overrides:
      equals in class Item
      Returns:
      true if this NominalItem is equal to the argument.