Class RankFeatureSigmoidFunction

is an extension of saturation which adds a configurable exponent. Scores are computed as S^exp^ / (S^exp^ + pivot^exp^). Like for the saturation function, pivot is the value of S that gives a score of 0.5 and scores are in (0, 1).

exponent must be positive, but is typically in [0.5, 1]. A good value should be computed via training. If you don’t have the opportunity to do so, we recommend that you stick to the saturation function instead.

Inheritance

object

RankFeatureSigmoidFunction

Implements

IRankFeatureSigmoidFunction

IRankFeatureFunction

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: OpenSearch.Client

Assembly: OpenSearch.Client.dll

Syntax

public class RankFeatureSigmoidFunction : IRankFeatureSigmoidFunction, IRankFeatureFunction

Properties

Exponent

The exponent. Must be positive

Declaration

public float Exponent { get; set; }

Property Value

Type	Description
float

Pivot

Declaration

public float Pivot { get; set; }

Property Value

Type	Description
float

Implements

IRankFeatureSigmoidFunction

IRankFeatureFunction

Extension Methods

SuffixExtensions.Suffix(object, string)