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java.lang.Objectnet.sf.myra.antree.EntropyHelper
public class EntropyHelper
Constructor Summary | |
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EntropyHelper(net.sf.myra.datamining.data.Dataset dataset)
Default constructor. |
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EntropyHelper(net.sf.myra.datamining.data.Metadata metadata,
java.util.List<net.sf.myra.datamining.data.Instance> instances)
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Method Summary | |
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double |
gain(net.sf.myra.datamining.data.Attribute attribute)
Returns the gain of the specified attribute. |
double |
gainRatio(net.sf.myra.datamining.data.Attribute attribute)
Returns the gain ratio of the specified attribute. |
double |
maximum()
Returns the maximum (worse) possible entropy value. |
boolean |
verify(net.sf.myra.datamining.data.Attribute attribute)
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public EntropyHelper(net.sf.myra.datamining.data.Dataset dataset)
dataset
- the data set instance.public EntropyHelper(net.sf.myra.datamining.data.Metadata metadata, java.util.List<net.sf.myra.datamining.data.Instance> instances)
Method Detail |
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public double maximum()
public double gain(net.sf.myra.datamining.data.Attribute attribute)
attribute
- the attribute to determine the gain value.
public double gainRatio(net.sf.myra.datamining.data.Attribute attribute)
attribute
- the attribute to determine the gain ratio value.
public boolean verify(net.sf.myra.datamining.data.Attribute attribute)
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