Class RawTFSimilarity
java.lang.Object
org.apache.lucene.search.similarities.Similarity
org.apache.lucene.search.similarities.RawTFSimilarity
Similarity that returns the raw TF as score.
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.search.similarities.Similarity
Similarity.SimScorer -
Constructor Summary
ConstructorsConstructorDescriptionDefault constructor: parameter-freeRawTFSimilarity(boolean discountOverlaps) Primary constructor. -
Method Summary
Modifier and TypeMethodDescriptionscorer(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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Constructor Details
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RawTFSimilarity
public RawTFSimilarity()Default constructor: parameter-free -
RawTFSimilarity
public RawTFSimilarity(boolean discountOverlaps) Primary constructor.
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Method Details
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scorer
public Similarity.SimScorer scorer(float boost, CollectionStatistics collectionStats, TermStatistics... termStats) Description copied from class:SimilarityCompute any collection-level weight (e.g. IDF, average document length, etc) needed for scoring a query.- Specified by:
scorerin 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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