es.uam.eps.ir.relison.diffusion.propagation.AllNeighborsPropagationMechanism Maven / Gradle / Ivy
/*
* Copyright (C) 2020 Information Retrieval Group at Universidad Autónoma
* de Madrid, http://ir.ii.uam.es
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
package es.uam.eps.ir.relison.diffusion.propagation;
import es.uam.eps.ir.relison.diffusion.data.Data;
import es.uam.eps.ir.relison.diffusion.data.PropagatedInformation;
import es.uam.eps.ir.relison.diffusion.simulation.UserState;
import es.uam.eps.ir.relison.graph.edges.EdgeOrientation;
import java.io.Serializable;
import java.util.stream.Stream;
/**
* Given a single piece of information, a user selects all his/her neighbors as the destination of the piece.
*
* @author Javier Sanz-Cruzado ([email protected])
* @author Pablo Castells ([email protected])
*
* @param type of the users.
* @param type of the items.
* @param type of the parameters.
*/
public class AllNeighborsPropagationMechanism implements PropagationMechanism
{
/**
* The orientation for selecting the neighbors.
*/
private final EdgeOrientation orientation;
/**
* Constructor.
* @param orientation the orientation for selecting the neighbors.
*/
public AllNeighborsPropagationMechanism(EdgeOrientation orientation)
{
this.orientation = orientation;
}
@Override
public Stream getUsersToPropagate(PropagatedInformation information, UserState originUser, Data data)
{
// We select the whole set of neighbors.
return data.getGraph().getNeighbourhood(originUser.getUserId(), orientation);
}
@Override
public boolean dependsOnInformationPiece()
{
return false;
}
}