public final class GainRatioSplitCrit extends EntropyBasedSplitCrit
Constructor and Description |
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GainRatioSplitCrit() |
Modifier and Type | Method and Description |
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java.lang.String |
getRevision()
Returns the revision string.
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double |
splitCritValue(Distribution bags)
This method is a straightforward implementation of the gain
ratio criterion for the given distribution.
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double |
splitCritValue(Distribution bags,
double totalnoInst,
double numerator)
This method computes the gain ratio in the same way C4.5 does.
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logFunc, newEnt, oldEnt, splitEnt
splitCritValue, splitCritValue, splitCritValue
public final double splitCritValue(Distribution bags)
splitCritValue
in class SplitCriterion
public final double splitCritValue(Distribution bags, double totalnoInst, double numerator)
bags
- the distributiontotalnoInst
- the weight of ALL instancesnumerator
- the info gainpublic java.lang.String getRevision()