es.uam.eps.ir.ranksys.core.feature

Interface FeatureData<I,F,V>

Type Parameters:

I - type of the items

F - type of the features

V - type of the information about item-feature pairs

All Superinterfaces:

FeatureIndex<F>, ItemIndex<I>

All Known Subinterfaces:

FastFeatureData<I,F,V>

All Known Implementing Classes:

AbstractFastFeatureData, SimpleFastFeatureData, SimpleFeatureData

public interface FeatureData<I,F,V>
extends ItemIndex<I>, FeatureIndex<F>

Item-feature data.

Author:

Saúl Vargas (saul.vargas@uam.es), Pablo Castells (pablo.castells@uam.es)

Method Summary

Modifier and Type	Method and Description
Stream<org.jooq.lambda.tuple.Tuple2<I,V>>	getFeatureItems(F f) Returns a stream of items with the feature.
Stream<F>	getFeaturesWithItems() Returns a stream of features with items.
Stream<org.jooq.lambda.tuple.Tuple2<F,V>>	getItemFeatures(I i) Returns a stream of features of the item.
Stream<I>	getItemsWithFeatures() Returns a stream of items with features.
int	numFeatures(I i) Returns the number of features of the item.
int	numFeaturesWithItems() Returns the number of features with items.
int	numItems(F f) Returns the number of items with the feature.
int	numItemsWithFeatures() Returns the number of items with features.

Methods inherited from interface es.uam.eps.ir.ranksys.core.index.ItemIndex

containsItem, getAllItems, numItems

Methods inherited from interface es.uam.eps.ir.ranksys.core.index.FeatureIndex

containsFeature, getAllFeatures, numFeatures

Method Detail

numItemsWithFeatures

int numItemsWithFeatures()

Returns the number of items with features.

Returns:

number of items with features

numFeaturesWithItems

int numFeaturesWithItems()

Returns the number of features with items.

Returns:

number of features with items

getItemsWithFeatures

Stream<I> getItemsWithFeatures()

Returns a stream of items with features.

Returns:

stream of items with features

getFeaturesWithItems

Stream<F> getFeaturesWithItems()

Returns a stream of features with items.

Returns:

stream of features with items.

getFeatureItems

Stream<org.jooq.lambda.tuple.Tuple2<I,V>> getFeatureItems(F f)

Returns a stream of items with the feature.

Parameters:

f - feature

Returns:

stream of items with the feature.

getItemFeatures

Stream<org.jooq.lambda.tuple.Tuple2<F,V>> getItemFeatures(I i)

Returns a stream of features of the item.

Parameters:

i - item

Returns:

stream of features of the item.

numFeatures

int numFeatures(I i)

Returns the number of features of the item.

Parameters:

i - item

Returns:

number of features of the item

numItems

int numItems(F f)

Returns the number of items with the feature.

Parameters:

f - feature

Returns:

number of items with the feature