Class NormalizationH3
java.lang.Object
org.apache.lucene.search.similarities.Normalization
org.apache.lucene.search.similarities.NormalizationH3
Dirichlet Priors normalization
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Normalization
Normalization.NoNormalization
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Constructor Summary
ConstructorsConstructorDescriptionCallsNormalizationH3(800)
NormalizationH3
(float mu) Creates NormalizationH3 with the supplied parameterμ
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Method Summary
Modifier and TypeMethodDescriptionfloat
getMu()
Returns the parameterμ
float
tfn
(BasicStats stats, float tf, float len) Returns the normalized term frequency.toString()
Subclasses must override this method to return the code of the normalization formula.Methods inherited from class org.apache.lucene.search.similarities.Normalization
explain
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Constructor Details
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NormalizationH3
public NormalizationH3()CallsNormalizationH3(800)
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NormalizationH3
public NormalizationH3(float mu) Creates NormalizationH3 with the supplied parameterμ
.- Parameters:
mu
- smoothing parameterμ
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Method Details
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tfn
Description copied from class:Normalization
Returns the normalized term frequency.- Specified by:
tfn
in classNormalization
len
- the field length.
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toString
Description copied from class:Normalization
Subclasses must override this method to return the code of the normalization formula. Refer to the original paper for the list.- Specified by:
toString
in classNormalization
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getMu
public float getMu()Returns the parameterμ
- See Also:
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