es.uam.eps.ir.ranksys.diversity.intentaware

Class FeatureIntentModel.FeatureUserIntentModel

java.lang.Object

es.uam.eps.ir.ranksys.diversity.intentaware.FeatureIntentModel.FeatureUserIntentModel

All Implemented Interfaces:

UserModel.Model<U>, IntentModel.UserIntentModel<U,I,F>

Enclosing class:

FeatureIntentModel<U,I,F>

public class FeatureIntentModel.FeatureUserIntentModel
extends Object
implements IntentModel.UserIntentModel<U,I,F>

Default user intent-aware model for FeatureIntentModel.

Field Summary

Fields

Modifier and Type	Field and Description
protected it.unimi.dsi.fastutil.objects.Object2DoubleOpenHashMap<F>	pfu Map feature to p(f|u)

Constructor Summary

Constructors

Constructor and Description
FeatureUserIntentModel(U user) Constructor.

Method Summary

Modifier and Type	Method and Description
Set<F>	getIntents() Returns the intents considered in the intent model.
Stream<F>	getItemIntents(I i) Returns the intents associated with an item.
double	pf_u(F f) Returns the probability of an intent in the model.

Methods inherited from class java.lang.Object

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

Field Detail

pfu

protected final it.unimi.dsi.fastutil.objects.Object2DoubleOpenHashMap<F> pfu

Map feature to p(f|u)

Constructor Detail

FeatureUserIntentModel

public FeatureUserIntentModel(U user)

Constructor.

Parameters:

user - user whose model is created.

Method Detail

getIntents

public Set<F> getIntents()

Returns the intents considered in the intent model.

Specified by:

getIntents in interface IntentModel.UserIntentModel<U,I,F>

Returns:

set of features as intents

getItemIntents

public Stream<F> getItemIntents(I i)

Returns the intents associated with an item.

Specified by:

getItemIntents in interface IntentModel.UserIntentModel<U,I,F>

Parameters:

i - target item

Returns:

features as items covered by the item

pf_u

public double pf_u(F f)

Returns the probability of an intent in the model.

Specified by:

pf_u in interface IntentModel.UserIntentModel<U,I,F>

Parameters:

f - feature as intent

Returns:

probability of the feature-intent