org.grouplens.lenskit.knn.item

Class ItemItemGlobalScorer

java.lang.Object

org.grouplens.lenskit.basic.AbstractGlobalItemScorer

org.grouplens.lenskit.knn.item.ItemItemGlobalScorer

All Implemented Interfaces:

GlobalItemScorer

public class ItemItemGlobalScorer
extends AbstractGlobalItemScorer

Score items based on the basket of items using an item-item CF model.

Field Summary

Fields

Modifier and Type	Field and Description
protected ItemScoreAlgorithm	algorithm
protected ItemItemModel	model
protected NeighborhoodScorer	scorer

Constructor Summary

Constructors

Constructor and Description
ItemItemGlobalScorer(ItemItemModel m, ItemScoreAlgorithm algo)

Method Summary

Modifier and Type	Method and Description
void	globalScore(Collection<Long> queryItems, MutableSparseVector output) Score items in a vector based on a collection of items (a shopping basket).

Methods inherited from class org.grouplens.lenskit.basic.AbstractGlobalItemScorer

globalScore, globalScore

Methods inherited from class java.lang.Object

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

Field Detail

model

protected final ItemItemModel model

scorer

@Nonnull
protected final NeighborhoodScorer scorer

algorithm

@Nonnull
protected final ItemScoreAlgorithm algorithm

Constructor Detail

ItemItemGlobalScorer

@Inject
public ItemItemGlobalScorer(ItemItemModel m,
                                    ItemScoreAlgorithm algo)

Method Detail

globalScore

public void globalScore(@Nonnull
                        Collection<Long> queryItems,
                        @Nonnull
                        MutableSparseVector output)

Description copied from interface: GlobalItemScorer

Score items in a vector based on a collection of items (a shopping basket).

Parameters:

queryItems - The items to use as the query.

output - A vector whose key domain is the items to score.

See Also:

ItemScorer.score(long, MutableSparseVector)