org.lenskit.knn.item

Class WeightedAverageNeighborhoodScorer

java.lang.Object

org.lenskit.knn.item.WeightedAverageNeighborhoodScorer

All Implemented Interfaces:

java.io.Serializable, NeighborhoodScorer

@Shareable
public class WeightedAverageNeighborhoodScorer
extends java.lang.Object
implements NeighborhoodScorer, java.io.Serializable

Neighborhood scorer that computes the weighted average of neighbor scores.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
WeightedAverageNeighborhoodScorer()

Method Summary

Modifier and Type	Method and Description
void	score(long item, Long2DoubleMap neighbors, Long2DoubleMap scores, ItemItemScoreAccumulator accum) Compute a score based on similar neighbors and their corresponding scores.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

WeightedAverageNeighborhoodScorer

public WeightedAverageNeighborhoodScorer()

Method Detail

score

public void score(long item,
                  Long2DoubleMap neighbors,
                  Long2DoubleMap scores,
                  ItemItemScoreAccumulator accum)

Description copied from interface: NeighborhoodScorer

Compute a score based on similar neighbors and their corresponding scores.

Specified by:

score in interface NeighborhoodScorer

Parameters:

item - The item ID to score.

neighbors - A vector of neighbors with similarity measures.

scores - A vector of item scores. It should contain a score for every item in neighbors.

accum - An accumulator to receive the score computed by this method.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object