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

DistributionLL

class DistributionLL : Distribution

Log-logistic distribution.

Unlike for DFR, the natural logarithm is used, as it is faster to compute and the original paper does not express any preference to a specific base.

Constructors

constructor()

Functions

fun explain(stats: BasicStats, tfn: Double, lambda: Double): Explanation

Explains the score. Returns the name of the model only, since both tfn and lambda are explained elsewhere.

open override fun score(stats: BasicStats, tfn: Double, lambda: Double): Double

Computes the score.

open override fun toString(): String

Subclasses must override this method to return the name of the distribution.