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

Interface RankingDiscountModel

All Known Implementing Classes:

ExponentialDiscountModel, LogarithmicDiscountModel, NoDiscountModel, ReciprocalDiscountModel

public interface RankingDiscountModel

Ranking discount model. The furthest an item is from the top of a recommendation list, the smaller the chance of the user seeing it. This discount model determines the penalization of relevance according to the rank of items in recommendation lists.

Author:

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

Method Summary

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

Method Detail

disc

double disc(int k)

Discount to be applied at a given position.

Parameters:

k - position in the recommendation list starting from 0

Returns:

discount to be applied for the given rank position