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

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
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