es.uam.eps.ir.ranksys.metrics.rel

Class BackgroundBinaryRelevanceModel<U,I>

java.lang.Object

es.uam.eps.ir.ranksys.core.model.UserModel<U>

es.uam.eps.ir.ranksys.metrics.rel.RelevanceModel<U,I>

es.uam.eps.ir.ranksys.metrics.rel.BackgroundBinaryRelevanceModel<U,I>

Type Parameters:

U - type of the users

I - type of the items

public class BackgroundBinaryRelevanceModel<U,I>
extends RelevanceModel<U,I>

Background discount model: assumes the relevance of unseen items in a test subset with a pre-fixed gain value.

Author:

Saúl Vargas (saul.vargas@uam.es)

Nested Class Summary

Nested classes/interfaces inherited from class es.uam.eps.ir.ranksys.metrics.rel.RelevanceModel

RelevanceModel.UserRelevanceModel<U,I>

Nested classes/interfaces inherited from class es.uam.eps.ir.ranksys.core.model.UserModel

UserModel.Model<U>

Constructor Summary

Constructors

Constructor and Description
BackgroundBinaryRelevanceModel(boolean caching, PreferenceData<U,I> testData, double threshold, double background) Constructor.

Method Summary

Modifier and Type	Method and Description
protected RelevanceModel.UserRelevanceModel<U,I>	get(U user) Calculates the user model for user u.

Methods inherited from class es.uam.eps.ir.ranksys.metrics.rel.RelevanceModel

getModel

Methods inherited from class es.uam.eps.ir.ranksys.core.model.UserModel

initialize

Methods inherited from class java.lang.Object

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

Constructor Detail

BackgroundBinaryRelevanceModel

public BackgroundBinaryRelevanceModel(boolean caching,
                                      PreferenceData<U,I> testData,
                                      double threshold,
                                      double background)

Constructor.

Parameters:

caching - are the user relevance models being cached?

testData - test subset of preferences

threshold - relevance threshold

background - gain of unseen items in the test subset

Method Detail

get

protected RelevanceModel.UserRelevanceModel<U,I> get(U user)

Description copied from class: UserModel

Calculates the user model for user u.

Specified by:

get in class RelevanceModel<U,I>

Parameters:

user - the user

Returns:

a user model