es.uam.eps.ir.ranksys.nn.neighborhood

Class TopKNeighborhood

java.lang.Object

es.uam.eps.ir.ranksys.nn.neighborhood.TopKNeighborhood

All Implemented Interfaces:

Neighborhood

public class TopKNeighborhood
extends Object
implements Neighborhood

Top-K neighborhood. It keeps the k most similar users/items as neighbors.

Author:

Saúl Vargas (saul.vargas@uam.es)

Constructor Summary

Constructors

Constructor and Description
TopKNeighborhood(Similarity sim, int k) Constructor.

Method Summary

Modifier and Type	Method and Description
Stream<Tuple2id>	getNeighbors(int idx) Returns the neighborhood of a user/index.

Methods inherited from class java.lang.Object

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

Constructor Detail

TopKNeighborhood

public TopKNeighborhood(Similarity sim,
                        int k)

Constructor.

Parameters:

sim - similarity

k - maximum size of neighborhood

Method Detail

getNeighbors

public Stream<Tuple2id> getNeighbors(int idx)

Returns the neighborhood of a user/index.

Specified by:

getNeighbors in interface Neighborhood

Parameters:

idx - user/index whose neighborhood is calculated

Returns:

stream of user/item-similarity pairs.