Class MultiSimilarity

Implements the CombSUM method for combining evidence from multiple similarity values described in: Joseph A. Shaw, Edward A. Fox. In Text REtrieval Conference (1993), pp. 243-252

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance
System.Object
Similarity
MultiSimilarity
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: Lucene.Net.Search.Similarities
Assembly: Lucene.Net.dll
Syntax
public class MultiSimilarity : Similarity

Constructors

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MultiSimilarity(Similarity[])

Creates a MultiSimilarity which will sum the scores of the provided sims.

Declaration
public MultiSimilarity(Similarity[] sims)
Parameters
Type Name Description
Similarity[] sims

Fields

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m_sims

the sub-similarities used to create the combined score

Declaration
protected readonly Similarity[] m_sims
Field Value
Type Description
Similarity[]

Methods

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ComputeNorm(FieldInvertState)

Declaration
public override long ComputeNorm(FieldInvertState state)
Parameters
Type Name Description
FieldInvertState state
Returns
Type Description
System.Int64
Overrides
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ComputeWeight(Single, CollectionStatistics, TermStatistics[])

Declaration
public override Similarity.SimWeight ComputeWeight(float queryBoost, CollectionStatistics collectionStats, params TermStatistics[] termStats)
Parameters
Type Name Description
System.Single queryBoost
CollectionStatistics collectionStats
TermStatistics[] termStats
Returns
Type Description
Similarity.SimWeight
Overrides
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GetSimScorer(Similarity.SimWeight, AtomicReaderContext)

Declaration
public override Similarity.SimScorer GetSimScorer(Similarity.SimWeight stats, AtomicReaderContext context)
Parameters
Type Name Description
Similarity.SimWeight stats
AtomicReaderContext context
Returns
Type Description
Similarity.SimScorer
Overrides