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java.lang.Object org.apache.lucene.search.similarities.Normalization org.apache.lucene.search.similarities.NormalizationH3
public class NormalizationH3
Dirichlet Priors normalization
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Normalization |
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Normalization.NoNormalization |
Constructor Summary | |
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NormalizationH3()
Calls NormalizationH3(800) |
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NormalizationH3(float mu)
Creates NormalizationH3 with the supplied parameter μ . |
Method Summary | |
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float |
getMu()
Returns the parameter μ |
float |
tfn(BasicStats stats,
float tf,
float len)
Returns the normalized term frequency. |
String |
toString()
Subclasses must override this method to return the code of the normalization formula. |
Methods inherited from class org.apache.lucene.search.similarities.Normalization |
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explain |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public NormalizationH3()
NormalizationH3(800)
public NormalizationH3(float mu)
μ
.
mu
- smoothing parameter μ
Method Detail |
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public float tfn(BasicStats stats, float tf, float len)
Normalization
tfn
in class Normalization
len
- the field length.public String toString()
Normalization
toString
in class Normalization
public float getMu()
μ
NormalizationH3(float)
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