Class PersonalizedPageRankHittingTime<U>

java.lang.Object
es.uam.eps.ir.ranksys.rec.AbstractRecommender<U,​I>
es.uam.eps.ir.ranksys.rec.fast.AbstractFastRecommender<U,​I>
es.uam.eps.ir.ranksys.rec.fast.FastRankingRecommender<U,​U>
Type Parameters:
U - type of the users.
All Implemented Interfaces:
es.uam.eps.ir.ranksys.core.index.ItemIndex<U>, es.uam.eps.ir.ranksys.core.index.UserIndex<U>, es.uam.eps.ir.ranksys.fast.index.FastItemIndex<U>, es.uam.eps.ir.ranksys.fast.index.FastUserIndex<U>, es.uam.eps.ir.ranksys.rec.fast.FastRecommender<U,​U>, es.uam.eps.ir.ranksys.rec.Recommender<U,​U>

public class PersonalizedPageRankHittingTime<U>
extends AbstractHittingTime<U>
Implementation of the Hitting time (using the personalized PageRank transition matrix)
  • Field Summary

    Fields 
    Modifier and Type Field Description
    private double r
    Teleport probability.

    Fields inherited from class es.uam.eps.ir.relison.links.recommendation.algorithms.MatrixBasedRecommender

    library

    Fields inherited from class es.uam.eps.ir.relison.links.recommendation.UserFastRankingRecommender

    graph

    Fields inherited from class es.uam.eps.ir.ranksys.rec.fast.AbstractFastRecommender

    iIndex, uIndex
  • Constructor Summary

    Constructors 
    Constructor Description
    PersonalizedPageRankHittingTime​(FastGraph<U> graph, double r)
    Constructor.
    PersonalizedPageRankHittingTime​(FastGraph<U> graph, MatrixLibrary library, double r)
    Constructor.
  • Method Summary

    Modifier and Type Method Description
    protected cern.colt.matrix.DoubleMatrix2D getCOLTTransitionMatrix​(int uidx)
    Obtains the transition matrix, for its use with the COLT library.
    protected org.jblas.DoubleMatrix getJBLASTransitionMatrix​(int uidx)
    Obtains the transition matrix, for its use with the JBLAS library.
    protected no.uib.cipr.matrix.DenseMatrix getMTJTransitionMatrix​(int uidx)
    Obtains the transition matrix, for its use with the MTJ library.

    Methods inherited from class es.uam.eps.ir.relison.links.recommendation.algorithms.standalone.randomwalk.AbstractHittingTime

    getCOLTMatrix, getJBLASMatrix, getMTJMatrix

    Methods inherited from class es.uam.eps.ir.relison.links.recommendation.algorithms.MatrixBasedRecommender

    getMatrix, getScoresMap

    Methods inherited from class es.uam.eps.ir.relison.links.recommendation.UserFastRankingRecommender

    getFreq, getFreq, getGraph

    Methods inherited from class es.uam.eps.ir.ranksys.rec.fast.FastRankingRecommender

    getRecommendation

    Methods inherited from class es.uam.eps.ir.ranksys.rec.fast.AbstractFastRecommender

    getRecommendation, getRecommendation, getRecommendation, getRecommendation, getRecommendation, getRecommendation, getRecommendation, iidx2item, item2iidx, numItems, numUsers, uidx2user, user2uidx

    Methods inherited from class es.uam.eps.ir.ranksys.rec.AbstractRecommender

    getRecommendation, getRecommendation

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface es.uam.eps.ir.ranksys.fast.index.FastItemIndex

    containsItem, getAllIidx, getAllItems, iidx2item, iidx2item, item2iidx, item2iidx

    Methods inherited from interface es.uam.eps.ir.ranksys.fast.index.FastUserIndex

    containsUser, getAllUidx, getAllUsers, uidx2user, uidx2user, user2uidx, user2uidx

    Methods inherited from interface es.uam.eps.ir.ranksys.rec.Recommender

    getRecommendation, getRecommendation
  • Field Details

    • r

      private final double r
      Teleport probability.
  • Constructor Details

    • PersonalizedPageRankHittingTime

      public PersonalizedPageRankHittingTime​(FastGraph<U> graph, double r)
      Constructor.
      Parameters:
      graph - a fast graph representing the social network.
      r - teleport probability.
    • PersonalizedPageRankHittingTime

      public PersonalizedPageRankHittingTime​(FastGraph<U> graph, MatrixLibrary library, double r)
      Constructor.
      Parameters:
      graph - a fast graph representing the social network.
      library - the matrix library to use.
      r - teleport probability.
  • Method Details