Package es.uam.eps.ir.relison.links.recommendation.algorithms.supervised

Class LambdaMARTRecommender<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>
es.uam.eps.ir.relison.links.recommendation.UserFastRankingRecommender<U>
es.uam.eps.ir.relison.links.recommendation.algorithms.supervised.LambdaMARTRecommender<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 LambdaMARTRecommender<U>
extends UserFastRankingRecommender<U>
Class that transforms the output of the JForest package to a recommendation Note: it has to be executed outside.
See Also:
JForests

  • Field Summary

    Fields 
    Modifier and Type Field Description
    private it.unimi.dsi.fastutil.ints.Int2ObjectMap<it.unimi.dsi.fastutil.ints.Int2DoubleMap> scoresMaps
    The final recommendation scores.

    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
    LambdaMARTRecommender​(FastGraph<U> graph, java.lang.String instancesSet, java.lang.String resultsSet, org.ranksys.formats.parsing.Parser<U> parser)
    Constructor.

  • Method Summary

    Modifier and Type Method Description
    it.unimi.dsi.fastutil.ints.Int2DoubleMap getScoresMap​(int uidx)  

    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

    • scoresMaps

      private final it.unimi.dsi.fastutil.ints.Int2ObjectMap<it.unimi.dsi.fastutil.ints.Int2DoubleMap> scoresMaps
      The final recommendation scores.

  • Constructor Details

    • LambdaMARTRecommender

      public LambdaMARTRecommender​(FastGraph<U> graph, java.lang.String instancesSet, java.lang.String resultsSet, org.ranksys.formats.parsing.Parser<U> parser)
      Constructor.
      Parameters:
      graph - the graph.
      instancesSet - a file containing the set of instances for the missing links in the graph.
      resultsSet - the LamdbdaMART scores for each one of those instances.
      parser - parses the different users from the file instance set.

  • Method Details

    • getScoresMap

      public it.unimi.dsi.fastutil.ints.Int2DoubleMap getScoresMap​(int uidx)
      Specified by:
      getScoresMap in class es.uam.eps.ir.ranksys.rec.fast.FastRankingRecommender<U,​U>