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

Class XQuAD<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.intentaware.reranking.AlphaXQuAD<U,I,F>

es.uam.eps.ir.ranksys.diversity.intentaware.reranking.XQuAD<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 XQuAD<U,I,F>
extends AlphaXQuAD<U,I,F>

eXplicit Query Aspect Diversification re-ranker. S. Vargas, P. Castells and D. Vallet. Intent-oriented diversity in Recommender Systems. SIGIR 2011. R.L.T. Santos, C. Macdonald and I. Ounis. Exploiting query reformulations for Web search result diversification. WWW 2010.

Author:

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

Nested Class Summary

Nested classes/interfaces inherited from class es.uam.eps.ir.ranksys.diversity.intentaware.reranking.AlphaXQuAD

AlphaXQuAD.UserAlphaXQuAD

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.diversity.intentaware.reranking.AlphaXQuAD

aspectModel

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
XQuAD(AspectModel<U,I,F> aspectModel, double lambda, int cutoff, boolean norm) Constructor.

Method Summary

Methods inherited from class es.uam.eps.ir.ranksys.diversity.intentaware.reranking.AlphaXQuAD

getUserReranker

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

XQuAD

public XQuAD(AspectModel<U,I,F> aspectModel,
             double lambda,
             int cutoff,
             boolean norm)

Constructor.

Parameters:

aspectModel - intent-aware model

lambda - trade-off between novelty and relevance

cutoff - number of items to be greedily selected

norm - normalize the linear combination between relevance and novelty