Class Distribution
- java.lang.Object
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- org.apache.lucene.search.similarities.Distribution
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- Direct Known Subclasses:
DistributionLL,DistributionSPL
public abstract class Distribution extends Object
The probabilistic distribution used to model term occurrence in information-based models.- See Also:
IBSimilarity- WARNING: This API is experimental and might change in incompatible ways in the next release.
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Constructor Summary
Constructors Constructor Description Distribution()Sole constructor.
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description Explanationexplain(BasicStats stats, double tfn, double lambda)Explains the score.abstract doublescore(BasicStats stats, double tfn, double lambda)Computes the score.abstract StringtoString()Subclasses must override this method to return the name of the distribution.
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Method Detail
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score
public abstract double score(BasicStats stats, double tfn, double lambda)
Computes the score.
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explain
public Explanation explain(BasicStats stats, double tfn, double lambda)
Explains the score. Returns the name of the model only, since bothtfnandlambdaare explained elsewhere.
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