es.uam.eps.ir.ranksys.rec

Interface Recommender<U,I>

Type Parameters:

U - type of the users

I - type of the items

All Known Subinterfaces:

FastRecommender<U,I>

All Known Implementing Classes:

AbstractFastRecommender, AbstractRecommender, FastEnsembleRecommender, FastRankingRecommender, PopularityRecommender, RandomRecommender

public interface Recommender<U,I>

Recommender interface. All static recommendation algorithms implement this interface.

Author:

Saúl Vargas (saul.vargas@uam.es)

Method Summary

Modifier and Type	Method and Description
Recommendation<U,I>	getRecommendation(U u) Free recommendation.
Recommendation<U,I>	getRecommendation(U u, int maxLength) Free recommendation.
Recommendation<U,I>	getRecommendation(U u, int maxLength, Predicate<I> filter) Filter recommendation.
Recommendation<U,I>	getRecommendation(U u, Predicate<I> filter) Filter recommendation.
Recommendation<U,I>	getRecommendation(U u, Stream<I> candidates) Candidates ranking.

Method Detail

getRecommendation

Recommendation<U,I> getRecommendation(U u)

Free recommendation. Generate recommendations without any restriction on the items being recommended.

Parameters:

u - user to be issued a recommendation

Returns:

a recommendation list

getRecommendation

Recommendation<U,I> getRecommendation(U u,
                                      int maxLength)

Free recommendation. Generate recommendations without any restriction on the items being recommended, but with a limit on the list size.

Parameters:

u - user to be issued a recommendation

maxLength - maximum length of recommendation

Returns:

a recommendation list

getRecommendation

Recommendation<U,I> getRecommendation(U u,
                                      Predicate<I> filter)

Filter recommendation. Recommends only the items that pass the filter.

Parameters:

u - user to be issued a recommendation

filter - filter to decide which items might be recommended

Returns:

a recommendation list

getRecommendation

Recommendation<U,I> getRecommendation(U u,
                                      int maxLength,
                                      Predicate<I> filter)

Filter recommendation. Recommends only the items that pass the filter up to a maximum list size.

Parameters:

u - user to be issued a recommendation

maxLength - maximum length of recommendation

filter - filter to decide which items might be recommended

Returns:

a recommendation list

getRecommendation

Recommendation<U,I> getRecommendation(U u,
                                      Stream<I> candidates)

Candidates ranking. Create a list that may contain only the items in the candidates set.

Parameters:

u - user to be issued a recommendation

candidates - candidate items to be included in the recommendation

Returns:

a recommendation list