Class Similarity.SimScorer

API for scoring "sloppy" queries such as TermQuery, SpanQuery, and PhraseQuery.

Frequencies are floating-point values: an approximate within-document frequency adjusted for "sloppiness" by ComputeSlopFactor(Int32).

Inheritance
System.Object
Similarity.SimScorer
Namespace: Lucene.Net.Search.Similarities
Assembly: Lucene.Net.dll
Syntax
public abstract class SimScorer : object

Constructors

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SimScorer()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Declaration
public SimScorer()

Methods

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ComputePayloadFactor(Int32, Int32, Int32, BytesRef)

Calculate a scoring factor based on the data in the payload.

Declaration
public abstract float ComputePayloadFactor(int doc, int start, int end, BytesRef payload)
Parameters
Type Name Description
System.Int32 doc
System.Int32 start
System.Int32 end
BytesRef payload
Returns
Type Description
System.Single
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ComputeSlopFactor(Int32)

Computes the amount of a sloppy phrase match, based on an edit distance.

Declaration
public abstract float ComputeSlopFactor(int distance)
Parameters
Type Name Description
System.Int32 distance
Returns
Type Description
System.Single
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Explain(Int32, Explanation)

Explain the score for a single document

Declaration
public virtual Explanation Explain(int doc, Explanation freq)
Parameters
Type Name Description
System.Int32 doc

document id within the inverted index segment

Explanation freq

Explanation of how the sloppy term frequency was computed

Returns
Type Description
Explanation

document's score

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Score(Int32, Single)

Score a single document

Declaration
public abstract float Score(int doc, float freq)
Parameters
Type Name Description
System.Int32 doc

document id within the inverted index segment

System.Single freq

sloppy term frequency

Returns
Type Description
System.Single

document's score