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    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
    object
    BasicModel
    BasicModelBE
    Inherited Members
    BasicModel.Explain(BasicStats, float)
    object.Equals(object)
    object.Equals(object, object)
    object.GetHashCode()
    object.GetType()
    object.MemberwiseClone()
    object.ReferenceEquals(object, object)
    Namespace: Lucene.Net.Search.Similarities
    Assembly: Lucene.Net.dll
    Syntax
    public class BasicModelBE : BasicModel

    Constructors

    BasicModelBE()

    Sole constructor: parameter-free

    Declaration
    public BasicModelBE()

    Methods

    Score(BasicStats, float)

    Returns the informative content score.

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

    ToString()

    Subclasses must override this method to return the code of the basic model formula. Refer to the original paper for the list.

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