es.uam.eps.ir.ranksys.diversity.binom.reranking

Class BinomialDiversityReranker<U,I,F>

java.lang.Object

es.uam.eps.ir.ranksys.novdiv.reranking.PermutationReranker<U,I>

es.uam.eps.ir.ranksys.novdiv.reranking.GreedyReranker<U,I>

es.uam.eps.ir.ranksys.novdiv.reranking.LambdaReranker<U,I>

es.uam.eps.ir.ranksys.diversity.binom.reranking.BinomialDiversityReranker<U,I,F>

Type Parameters:

U - type of the users

I - type of the items

F - type of the features

All Implemented Interfaces:

Reranker<U,I>

public class BinomialDiversityReranker<U,I,F>
extends LambdaReranker<U,I>

Binomial diversity reranker. S. Vargas, L. Baltrunas, A. Karatzoglou, P. Castells. Coverage, redundancy and size-awareness in genre diversity for Recommender Systems. RecSys 2014.

Author:

Saúl Vargas (saul.vargas@uam.es)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	BinomialDiversityReranker.BinomialDiversityUserReranker User re-ranker for BinomialDiversityReranker.

Nested classes/interfaces inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.LambdaReranker

LambdaReranker.LambdaUserReranker

Nested classes/interfaces inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.GreedyReranker

GreedyReranker.GreedyUserReranker<U,I>

Field Summary

Fields inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.LambdaReranker

lambda

Fields inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.GreedyReranker

cutoff

Constructor Summary

Constructors

Constructor and Description
BinomialDiversityReranker(FeatureData<I,F,?> featureData, BinomialModel<U,I,F> binomialModel, double lambda, int cutoff) Constructor.

Method Summary

Modifier and Type	Method and Description
protected LambdaReranker.LambdaUserReranker	getUserReranker(Recommendation<U,I> recommendation, int maxLength)

Methods inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.LambdaReranker

rerankPermutation

Methods inherited from class es.uam.eps.ir.ranksys.novdiv.reranking.PermutationReranker

getBasePerm, permuteRecommendation, rerankRecommendation

Methods inherited from class java.lang.Object

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

Constructor Detail

BinomialDiversityReranker

public BinomialDiversityReranker(FeatureData<I,F,?> featureData,
                                 BinomialModel<U,I,F> binomialModel,
                                 double lambda,
                                 int cutoff)

Constructor.

Parameters:

featureData - feature data

binomialModel - binomial model

lambda - trade-off between relevance and novelty

cutoff - number of items to be greedily selected

Method Detail

getUserReranker

protected LambdaReranker.LambdaUserReranker getUserReranker(Recommendation<U,I> recommendation,
                                                            int maxLength)

Specified by:

getUserReranker in class LambdaReranker<U,I>