core/org.gnit.lucenekmp.search.similarities/Lambda

Lambda

abstract class Lambda

The lambda (λw) parameter in information-based models.

See also

Inheritors

Constructors

constructor()

Functions

abstract fun explain(stats: BasicStats): Explanation

Explains the lambda parameter.

abstract fun lambda(stats: BasicStats): Float

Computes the lambda parameter.

abstract override fun toString(): String

Subclasses must override this method to return the code of the lambda formula. Since the original paper is not very clear on this matter, and also uses the DFR naming scheme incorrectly, the codes here were chosen arbitrarily.