es.uam.eps.ir.relison.diffusion.protocols.PullModelProtocol Maven / Gradle / Ivy
The newest version!
/*
* 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.protocols;
import es.uam.eps.ir.relison.diffusion.expiration.AllNotPropagatedExpirationMechanism;
import es.uam.eps.ir.relison.diffusion.propagation.PullStrategyPropagationMechanism;
import es.uam.eps.ir.relison.diffusion.selections.CountSelectionMechanism;
import es.uam.eps.ir.relison.diffusion.sight.AllNotPropagatedSightMechanism;
import es.uam.eps.ir.relison.diffusion.update.NewestUpdateMechanism;
import es.uam.eps.ir.relison.graph.edges.EdgeOrientation;
import java.io.Serializable;
/**
* Protocol that applies the push strategy for diffunding the information. In this strategy, each
* user selects a neighbour, and obtains from it all the information.
*
* @author Javier Sanz-Cruzado ([email protected])
* @author Pablo Castells ([email protected])
*
* @param type of the users.
* @param type of the information pieces.
* @param type of the user and information pieces features.
*
*
* Reference: A. Demers, D. Greene, C. Hauser, W. Irish, J. Larson. Epidemic algorithms for replicated database maintenance. ACM PODC 1987, pp. 1-12 (1987)
*
*/
public class PullModelProtocol extends Protocol
{
/**
* Constructor.
* @param numOwn number of own information to propagate.
* @param numRec number of received information to propagate.
* @param numWait number of steps before selecting an already visited user.
*/
public PullModelProtocol(int numOwn, int numRec, int numWait)
{
super( new CountSelectionMechanism<>(numOwn, numRec),
new AllNotPropagatedExpirationMechanism<>(),
new NewestUpdateMechanism(),
new PullStrategyPropagationMechanism<>(numWait, EdgeOrientation.OUT),
new AllNotPropagatedSightMechanism<>());
}
}