Package es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.edge

Class HeuristicWeaknessReranker<U>

java.lang.Object

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapReranker<U,I>

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapGreedyReranker<U,I>

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapLambdaReranker<U,U>

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.GraphSwapReranker<U>

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.edge.AbstractHeuristicNeighborOverlapReranker<U>

es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.edge.HeuristicWeaknessReranker<U>

Type Parameters:

U - type of the users

All Implemented Interfaces:

GlobalReranker<U,U>

public class HeuristicWeaknessReranker<U>
extends AbstractHeuristicNeighborOverlapReranker<U>

Swap reranker for optimizing the embeddedness of the graph. It uses heuristics to optimize the execution times.

Field Summary

Fields inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.GraphSwapReranker

graph, recs

Fields inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapLambdaReranker

novMap, novStats, relStats

Fields inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapGreedyReranker

cutOff

Fields inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapReranker

globalvalue

Constructor Summary

Constructors

Constructor	Description
HeuristicWeaknessReranker(double lambda, int cutOff, java.util.function.Supplier<Normalizer<U>> norm, Graph<U> graph, int mode)	Constructor

Method Summary

Methods inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.edge.AbstractHeuristicNeighborOverlapReranker

computeGlobalValue, innerUpdate, novAdd, novAddDelete, novDelete, update

Methods inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.GraphSwapReranker

nov, rerankRecommendations, update

Methods inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapLambdaReranker

rerankPermutation, selectItem, value, valuetop

Methods inherited from class es.uam.eps.ir.relison.links.recommendation.reranking.global.swap.SwapGreedyReranker

getBasePerm, rerankRecommendation

Methods inherited from class java.lang.Object

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

Constructor Details

HeuristicWeaknessReranker

public HeuristicWeaknessReranker(double lambda, int cutOff, java.util.function.Supplier<Normalizer<U>> norm, Graph<U> graph, int mode)

Constructor

Parameters:

cutOff - the definitive length of the recommendation rankings.

lambda - trade-off between the average embeddedness and the original score

norm - the normalization scheme.

graph - the original graph

mode - the execution mode: 1) Embededness is corrected any time a swap is done. 2) Embededness is corrected every time a user has finished its reranking. 3) Embededness is never corrected (only use the heuristic)