org.grouplens.lenskit.slopeone

Class WeightedSlopeOneItemScorer

java.lang.Object

org.grouplens.lenskit.basic.AbstractItemScorer

org.grouplens.lenskit.slopeone.SlopeOneItemScorer

org.grouplens.lenskit.slopeone.WeightedSlopeOneItemScorer

All Implemented Interfaces:

ItemScorer

public class WeightedSlopeOneItemScorer
extends SlopeOneItemScorer

An ItemScorer that implements a weighted Slope One algorithm.

Field Summary

Fields inherited from class org.grouplens.lenskit.slopeone.SlopeOneItemScorer

dao, domain, model

Constructor Summary

Constructors

Constructor and Description
WeightedSlopeOneItemScorer(UserEventDAO dao, SlopeOneModel model, PreferenceDomain dom)

Method Summary

Modifier and Type	Method and Description
void	score(long uid, MutableSparseVector scores) Score items in a vector.

Methods inherited from class org.grouplens.lenskit.slopeone.SlopeOneItemScorer

getModel

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

score, score

Methods inherited from class java.lang.Object

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

Constructor Detail

WeightedSlopeOneItemScorer

@Inject
public WeightedSlopeOneItemScorer(UserEventDAO dao,
                                          SlopeOneModel model,
                                          @Nullable
                                          PreferenceDomain dom)

Method Detail

score

public void score(long uid,
                  @Nonnull
                  MutableSparseVector scores)

Description copied from interface: ItemScorer

Score items in a vector. The key domain of the provided vector is the items to score, and the score method sets the values for each item to its score (or unsets it, if no score can be provided). The previous values are discarded.

Specified by:

score in interface ItemScorer

Overrides:

score in class SlopeOneItemScorer

Parameters:

uid - The user ID.

scores - The score vector.