Class BasicModelBE

Limiting form of the Bose-Einstein model. The formula used in Lucene differs slightly from the one in the original paper: F is increased by tfn+1 and N is increased by F

Note

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

NOTE: in some corner cases this model may give poor performance with Normalizations that return large values for tfn such as NormalizationH3. Consider using the geometric approximation (BasicModelG) instead, which provides the same relevance but with less practical problems.

Inheritance
System.Object
BasicModel
BasicModelBE
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)
Namespace: Lucene.Net.Search.Similarities
Assembly: Lucene.Net.dll
Syntax
public class BasicModelBE : BasicModel

Constructors

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BasicModelBE()

Sole constructor: parameter-free

Declaration
public BasicModelBE()

Methods

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Score(BasicStats, Single)

Declaration
public sealed override float Score(BasicStats stats, float tfn)
Parameters
Type Name Description
BasicStats stats
System.Single tfn
Returns
Type Description
System.Single
Overrides
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ToString()

Declaration
public override string ToString()
Returns
Type Description
System.String
Overrides