weka.associations

Class NumericItem

java.lang.Object

weka.associations.Item

weka.associations.NumericItem

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Item>

public class NumericItem
extends Item
implements java.io.Serializable

Class that encapsulates a numeric item.

Version:

$Revision: 10172 $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NumericItem.Comparison

Constructor Summary

Constructors

Constructor and Description
NumericItem(Attribute att, double splitPoint, NumericItem.Comparison comp) Constructs a new NumericItem

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object compareTo) Equals.
NumericItem.Comparison	getComparison() Gets the comparison operator for this item.
java.lang.String	getComparisonAsString() Get this item's comparison operator as a String.
java.lang.String	getItemValueAsString() Get this item's value as a String.
double	getSplitPoint() Gets the numeric test.
java.lang.String	toString(boolean freq) A string representation of this item, (i.e.

Methods inherited from class weka.associations.Item

compareTo, decreaseFrequency, decreaseFrequency, getAttribute, getFrequency, hashCode, increaseFrequency, increaseFrequency, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

NumericItem

public NumericItem(Attribute att,
                   double splitPoint,
                   NumericItem.Comparison comp)
            throws java.lang.Exception

Constructs a new NumericItem

Parameters:

att - the attribute that backs the item.

splitPoint - the numeric test value.

comp - the comparison operator.

Throws:

java.lang.Exception - if the NumericItem can't be constructed.

Method Detail

getSplitPoint

public double getSplitPoint()

Gets the numeric test.

Returns:

the numeric test value for this item.

getComparison

public NumericItem.Comparison getComparison()

Gets the comparison operator for this item.

Returns:

the comparison operator for this item.

getItemValueAsString

public java.lang.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 java.lang.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 java.lang.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(java.lang.Object compareTo)

Equals. Compares the attribute, numeric test and comparison operator

Overrides:

equals in class Item

Returns:

true if this NumericItem is equal to the argument.