Class Normalization.NoNormalization
- java.lang.Object
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- org.apache.lucene.search.similarities.Normalization
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- org.apache.lucene.search.similarities.Normalization.NoNormalization
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- Enclosing class:
- Normalization
public static final class Normalization.NoNormalization extends Normalization
Implementation used when there is no normalization.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Normalization
Normalization.NoNormalization
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Constructor Summary
Constructors Constructor Description NoNormalization()
Sole constructor: parameter-free
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Explanation
explain(BasicStats stats, float tf, float len)
Returns an explanation for the normalized term frequency.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.
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Method Detail
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tfn
public final float tfn(BasicStats stats, float tf, float len)
Description copied from class:Normalization
Returns the normalized term frequency.- Specified by:
tfn
in classNormalization
len
- the field length.
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explain
public final Explanation explain(BasicStats stats, float tf, float len)
Description copied from class:Normalization
Returns an explanation for the normalized term frequency.The default normalization methods use the field length of the document and the average field length to compute the normalized term frequency. This method provides a generic explanation for such methods. Subclasses that use other statistics must override this method.
- Overrides:
explain
in classNormalization
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toString
public String 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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