Class RawTFSimilarity
- java.lang.Object
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- org.apache.lucene.search.similarities.Similarity
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- org.apache.lucene.search.similarities.RawTFSimilarity
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public class RawTFSimilarity extends Similarity
Similarity that returns the raw TF as score.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Similarity
Similarity.SimScorer
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Constructor Summary
Constructors Constructor Description RawTFSimilarity()
Default constructor: parameter-freeRawTFSimilarity(boolean discountOverlaps)
Primary constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Similarity.SimScorer
scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats)
Compute any collection-level weight (e.g.-
Methods inherited from class org.apache.lucene.search.similarities.Similarity
computeNorm, getDiscountOverlaps
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Method Detail
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scorer
public Similarity.SimScorer scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats)
Description copied from class:Similarity
Compute any collection-level weight (e.g. IDF, average document length, etc) needed for scoring a query.- Specified by:
scorer
in classSimilarity
- Parameters:
boost
- a multiplicative factor to apply to the produces scorescollectionStats
- collection-level statistics, such as the number of tokens in the collection.termStats
- term-level statistics, such as the document frequency of a term across the collection.- Returns:
- SimWeight object with the information this Similarity needs to score a query.
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