Package es.uam.eps.ir.relison.links.recommendation.algorithms.standalone.foaf

Class Dist2Popularity<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.standalone.foaf.Dist2Popularity<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 Dist2Popularity<U>
extends UserFastRankingRecommender<U>

Recommender that sorts users at distance 2 by popularity.

Field Summary

Fields

Modifier and Type	Field	Description
private EdgeOrientation	uSel	Neighborhood selection for the target users.
private EdgeOrientation	vSel	Neighborhood selection for the candidate users.
private it.unimi.dsi.fastutil.ints.Int2DoubleMap	vSizes	Map containing the popularity of the candidate users.

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
Dist2Popularity(FastGraph<U> graph, EdgeOrientation uSel, EdgeOrientation vSel)	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

vSizes

private final it.unimi.dsi.fastutil.ints.Int2DoubleMap vSizes

Map containing the popularity of the candidate users.

uSel

private final EdgeOrientation uSel

Neighborhood selection for the target users.

vSel

private final EdgeOrientation vSel

Neighborhood selection for the candidate users.

Constructor Details

Dist2Popularity

public Dist2Popularity(FastGraph<U> graph, EdgeOrientation uSel, EdgeOrientation vSel)

Constructor.

Parameters:

graph - the graph.

uSel - the neighborhood selection for the target user.

vSel - the neighborhood selection for the candidate user.

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>