es.uam.eps.ir.ranksys.metrics.basic

Class Recall<U,I>

java.lang.Object

es.uam.eps.ir.ranksys.metrics.AbstractRecommendationMetric<U,I>

es.uam.eps.ir.ranksys.metrics.basic.Recall<U,I>

Type Parameters:

U - type of the users

I - type of the items

All Implemented Interfaces:

RecommendationMetric<U,I>

public class Recall<U,I>
extends AbstractRecommendationMetric<U,I>

Recall metric: proportion of relevant items in a recommendation list to all relevant items.

Author:

Jacek Wasilewski (jacek.wasilewski@insight-centre.org)

Constructor Summary

Constructors

Constructor and Description
Recall(int cutoff, IdealRelevanceModel<U,I> relModel) Constructor.

Method Summary

Modifier and Type	Method and Description
double	evaluate(Recommendation<U,I> recommendation) Returns a score for the recommendation list.

Methods inherited from class java.lang.Object

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

Constructor Detail

Recall

public Recall(int cutoff,
              IdealRelevanceModel<U,I> relModel)

Constructor.

Parameters:

cutoff - maximum length of recommended lists

relModel - relevance model

Method Detail

evaluate

public double evaluate(Recommendation<U,I> recommendation)

Returns a score for the recommendation list.

Parameters:

recommendation - recommendation list

Returns:

score of the metric to the recommendation