es.uam.eps.ir.ranksys.novelty.inverted.neighborhood

Class InvertedNeighborhood

java.lang.Object

es.uam.eps.ir.ranksys.novelty.inverted.neighborhood.InvertedNeighborhood

All Implemented Interfaces:

Neighborhood

public class InvertedNeighborhood
extends Object
implements Neighborhood

Inverted neighborhood. S. Vargas and P. Castells. Improving sales diversity by recommending users to items.

Author:

Saúl Vargas (saul.vargas@uam.es)

Constructor Summary

Constructors

Constructor and Description
InvertedNeighborhood(int n, Neighborhood neighborhood, IntPredicate filter) 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

InvertedNeighborhood

public InvertedNeighborhood(int n,
                            Neighborhood neighborhood,
                            IntPredicate filter)

Constructor.

Parameters:

n - number of users/items

neighborhood - original neighborhood to be inverted

filter - filter to determine the users that require an inverted 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.