es.uam.eps.ir.relison.diffusion.protocols.TemporalProtocol Maven / Gradle / Ivy
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/*
* 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.AllNotRealPropagatedTimestampExpirationMechanism;
import es.uam.eps.ir.relison.diffusion.propagation.AllNeighborsPropagationMechanism;
import es.uam.eps.ir.relison.diffusion.selections.LooseTimestampBasedSelectionMechanism;
import es.uam.eps.ir.relison.diffusion.selections.PureTimestampBasedSelectionMechanism;
import es.uam.eps.ir.relison.diffusion.sight.AllNotDiscardedNorPropagatedSightMechanism;
import es.uam.eps.ir.relison.diffusion.update.NewestUpdateMechanism;
import es.uam.eps.ir.relison.graph.edges.EdgeOrientation;
import java.io.Serializable;
/**
* Simulation protocol that considers the timestamps. This protocol aims at showing the true propagation
* of information through the network: it only propagates new information when the simulation iteration
* represents the timestamp of creation of the information piece, and a user propagates contents from
* other users only if they had been previously propagated in real life.
*
* @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.
*/
public class TemporalProtocol extends Protocol
{
/**
* Constructor.
* @param pure true if information received from other users cannot be repropagated after the timestamp
* of the repropagation has been visited, false if it can.
*/
public TemporalProtocol(boolean pure)
{
super ((pure) ? new PureTimestampBasedSelectionMechanism<>() : new LooseTimestampBasedSelectionMechanism<>(),
new AllNotRealPropagatedTimestampExpirationMechanism<>(),
new NewestUpdateMechanism(),
new AllNeighborsPropagationMechanism<>(EdgeOrientation.IN),
new AllNotDiscardedNorPropagatedSightMechanism<>());
}
}