es.uam.eps.ir.ranksys.diversity.other.metrics

Class SRecall<U,I,F>

java.lang.Object

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

es.uam.eps.ir.ranksys.diversity.other.metrics.SRecall<U,I,F>

Type Parameters:

U - type of the users

I - type of the items

F - type of the features

All Implemented Interfaces:

RecommendationMetric<U,I>

public class SRecall<U,I,F>
extends AbstractRecommendationMetric<U,I>

Subtopic recall metric. C. X. Zhai, W. W. Cohen, and J. Lafferty. Beyond Independent relevance: methods and evaluation metrics for subtopic retrieval.

Author:

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

Field Summary

Fields

Modifier and Type	Field and Description
protected RelevanceModel<U,I>	relModel relevance model

Constructor Summary

Constructors

Constructor and Description
SRecall(FeatureData<I,F,?> featureData, int cutoff, RelevanceModel<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

Field Detail

relModel

protected final RelevanceModel<U,I> relModel

relevance model

Constructor Detail

SRecall

public SRecall(FeatureData<I,F,?> featureData,
               int cutoff,
               RelevanceModel<U,I> relModel)

Constructor.

Parameters:

featureData - feature data

cutoff - maximum length of the recommendation lists to evaluate

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