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

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 abstract class SimScorer

Constructors

SimScorer()

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

Declaration

public SimScorer()

Methods

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

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

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

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