es.uam.eps.ir.ranksys.metrics.rank

Class ReciprocalDiscountModel

java.lang.Object

es.uam.eps.ir.ranksys.metrics.rank.ReciprocalDiscountModel

All Implemented Interfaces:

RankingDiscountModel

public class ReciprocalDiscountModel
extends Object
implements RankingDiscountModel

Reciprocal discount: disc(k) = 1 / (k + 1).

Author:

Saúl Vargas (saul.vargas@uam.es), Pablo Castells (pablo.castells@uam.es)

Constructor Summary

Constructors

Constructor and Description
ReciprocalDiscountModel()

Method Summary

Modifier and Type	Method and Description
double	disc(int k) Discount to be applied at a given position.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReciprocalDiscountModel

public ReciprocalDiscountModel()

Method Detail

disc

public double disc(int k)

Discount to be applied at a given position.

Specified by:

disc in interface RankingDiscountModel

Parameters:

k - position in the recommendation list starting from 0

Returns:

discount to be applied for the given rank position