es.uam.eps.ir.ranksys.metrics.basic

Class NDCG.NDCGRelevanceModel<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.IdealRelevanceModel<U,I>

es.uam.eps.ir.ranksys.metrics.basic.NDCG.NDCGRelevanceModel<U,I>

Type Parameters:

U - type of the users

I - type of the items

Enclosing class:

NDCG<U,I>

public static class NDCG.NDCGRelevanceModel<U,I>
extends IdealRelevanceModel<U,I>

Relevance model for nDCG, in which the gains of all relevant documents need to be known for the normalization of the metric.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	NDCG.NDCGRelevanceModel.UserNDCGRelevanceModel User relevance model for nDCG.

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

IdealRelevanceModel.UserIdealRelevanceModel<U,I>

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
NDCGRelevanceModel(boolean caching, PreferenceData<U,I> testData, double threshold) Constructors.

Method Summary

Modifier and Type	Method and Description
protected NDCG.NDCGRelevanceModel.UserNDCGRelevanceModel	get(U user) Calculates the user model for user u.

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

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

NDCGRelevanceModel

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

Constructors.

Parameters:

caching - are the user relevance models being cached?

testData - test subset of preferences

threshold - relevance threshold

Method Detail

get

protected NDCG.NDCGRelevanceModel.UserNDCGRelevanceModel get(U user)

Calculates the user model for user u.

Specified by:

get in class IdealRelevanceModel<U,I>

Parameters:

user - input user

Returns:

ndcg relevance model for input user