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Code Issues Releases Wiki Activity

added soft constraints to shipment calc

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This commit is contained in:
oblonski 2014-02-10 17:44:36 +01:00
parent 941e4ae29b
commit 330fa937a0
8 changed files with 257 additions and 96 deletions
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2
jsprit-examples/src/main/java/jsprit/examples/BicycleMessenger.java
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@ -239,7 +239,7 @@ public class BicycleMessenger {
//if you want, terminate it after 1000 iterations with no change
// algorithm.setPrematureAlgorithmTermination(new IterationWithoutImprovementTermination(1000));
// algorithm.addListener(new AlgorithmSearchProgressChartListener("output/progress.png"));
algorithm.setNuOfIterations(200);
algorithm.setNuOfIterations(2000);
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
//this is just to ensure that solution meet the above constraints

41
jsprit-examples/src/main/java/jsprit/examples/EnRoutePickupAndDeliveryWithMultipleDepotsExample.java
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@ -63,11 +63,20 @@ public class EnRoutePickupAndDeliveryWithMultipleDepotsExample {
vehicleBuilder1.setType(vehicleType);
Vehicle vehicle1 = vehicleBuilder1.build();
Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[50,50]");
vehicleBuilder2.setLocationCoord(Coordinate.newInstance(50, 50));
Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[30,30]");
vehicleBuilder2.setLocationCoord(Coordinate.newInstance(30, 30));
vehicleBuilder2.setType(vehicleType);
Vehicle vehicle2 = vehicleBuilder2.build();
Builder vehicleBuilder3 = VehicleImpl.Builder.newInstance("vehicles@[10,30]");
vehicleBuilder3.setLocationCoord(Coordinate.newInstance(10, 30));
vehicleBuilder3.setType(vehicleType);
Vehicle vehicle3 = vehicleBuilder3.build();
Builder vehicleBuilder4 = VehicleImpl.Builder.newInstance("vehicles@[30,10]");
vehicleBuilder4.setLocationCoord(Coordinate.newInstance(30, 10));
vehicleBuilder4.setType(vehicleType);
Vehicle vehicle4 = vehicleBuilder4.build();
/*
* build shipments at the required locations, each with a capacity-demand of 1.
@ -84,17 +93,31 @@ public class EnRoutePickupAndDeliveryWithMultipleDepotsExample {
Shipment shipment3 = Shipment.Builder.newInstance("3", 1).setPickupCoord(Coordinate.newInstance(15, 7)).setDeliveryCoord(Coordinate.newInstance(14, 9)).build();
Shipment shipment4 = Shipment.Builder.newInstance("4", 1).setPickupCoord(Coordinate.newInstance(15, 13)).setDeliveryCoord(Coordinate.newInstance(14, 11)).build();
Shipment shipment5 = Shipment.Builder.newInstance("5", 1).setPickupCoord(Coordinate.newInstance(55, 57)).setDeliveryCoord(Coordinate.newInstance(56, 59)).build();
Shipment shipment6 = Shipment.Builder.newInstance("6", 1).setPickupCoord(Coordinate.newInstance(55, 63)).setDeliveryCoord(Coordinate.newInstance(56, 61)).build();
Shipment shipment5 = Shipment.Builder.newInstance("5", 1).setPickupCoord(Coordinate.newInstance(25, 27)).setDeliveryCoord(Coordinate.newInstance(26, 29)).build();
Shipment shipment6 = Shipment.Builder.newInstance("6", 1).setPickupCoord(Coordinate.newInstance(25, 33)).setDeliveryCoord(Coordinate.newInstance(26, 31)).build();
Shipment shipment7 = Shipment.Builder.newInstance("7", 1).setPickupCoord(Coordinate.newInstance(65, 57)).setDeliveryCoord(Coordinate.newInstance(64, 59)).build();
Shipment shipment8 = Shipment.Builder.newInstance("8", 1).setPickupCoord(Coordinate.newInstance(65, 63)).setDeliveryCoord(Coordinate.newInstance(64, 61)).build();
Shipment shipment7 = Shipment.Builder.newInstance("7", 1).setPickupCoord(Coordinate.newInstance(35, 27)).setDeliveryCoord(Coordinate.newInstance(34, 29)).build();
Shipment shipment8 = Shipment.Builder.newInstance("8", 1).setPickupCoord(Coordinate.newInstance(35, 33)).setDeliveryCoord(Coordinate.newInstance(34, 31)).build();
Shipment shipment9 = Shipment.Builder.newInstance("9", 1).setPickupCoord(Coordinate.newInstance(5, 27)).setDeliveryCoord(Coordinate.newInstance(6, 29)).build();
Shipment shipment10 = Shipment.Builder.newInstance("10", 1).setPickupCoord(Coordinate.newInstance(5, 33)).setDeliveryCoord(Coordinate.newInstance(6, 31)).build();
Shipment shipment11 = Shipment.Builder.newInstance("11", 1).setPickupCoord(Coordinate.newInstance(15, 27)).setDeliveryCoord(Coordinate.newInstance(14, 29)).build();
Shipment shipment12 = Shipment.Builder.newInstance("12", 1).setPickupCoord(Coordinate.newInstance(15, 33)).setDeliveryCoord(Coordinate.newInstance(14, 31)).build();
Shipment shipment13 = Shipment.Builder.newInstance("13", 1).setPickupCoord(Coordinate.newInstance(25, 7)).setDeliveryCoord(Coordinate.newInstance(26, 9)).build();
Shipment shipment14 = Shipment.Builder.newInstance("14", 1).setPickupCoord(Coordinate.newInstance(25, 13)).setDeliveryCoord(Coordinate.newInstance(26, 11)).build();
Shipment shipment15 = Shipment.Builder.newInstance("15", 1).setPickupCoord(Coordinate.newInstance(35, 7)).setDeliveryCoord(Coordinate.newInstance(34, 9)).build();
Shipment shipment16 = Shipment.Builder.newInstance("16", 1).setPickupCoord(Coordinate.newInstance(35, 13)).setDeliveryCoord(Coordinate.newInstance(34, 11)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2);
vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2).addVehicle(vehicle3).addVehicle(vehicle4);
vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
vrpBuilder.addJob(shipment9).addJob(shipment10).addJob(shipment11).addJob(shipment12);
vrpBuilder.addJob(shipment13).addJob(shipment14).addJob(shipment15).addJob(shipment16);
vrpBuilder.setFleetSize(FleetSize.FINITE);
VehicleRoutingProblem problem = vrpBuilder.build();
@ -102,8 +125,8 @@ public class EnRoutePickupAndDeliveryWithMultipleDepotsExample {
/*
* get the algorithm out-of-the-box.
*/
VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig_noVehicleSwitch.xml");
algorithm.setNuOfIterations(30000);
VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig.xml");
// algorithm.setNuOfIterations(30000);
/*
* and search a solution
*/

145
jsprit-examples/src/main/java/jsprit/examples/ServicePickupsWithMultipleDepotsExample.java Normal file
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@ -0,0 +1,145 @@
/*******************************************************************************
* Copyright (C) 2013 Stefan Schroeder
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package jsprit.examples;
import java.util.Arrays;
import java.util.Collection;
import jsprit.analysis.toolbox.GraphStreamViewer;
import jsprit.analysis.toolbox.GraphStreamViewer.Label;
import jsprit.analysis.toolbox.Plotter;
import jsprit.analysis.toolbox.SolutionPrinter;
import jsprit.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.io.VehicleRoutingAlgorithms;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.io.VrpXMLWriter;
import jsprit.core.problem.job.Service;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.Vehicle;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleImpl.Builder;
import jsprit.core.problem.vehicle.VehicleType;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.util.Coordinate;
import jsprit.core.util.Solutions;
import jsprit.util.Examples;
public class ServicePickupsWithMultipleDepotsExample {
public static void main(String[] args) {
/*
* some preparation - create output folder
*/
Examples.createOutputFolder();
/*
* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
*/
VehicleTypeImpl.Builder vehicleTypeBuilder = VehicleTypeImpl.Builder.newInstance("vehicleType", 8);
vehicleTypeBuilder.setCostPerDistance(1.0);
VehicleType vehicleType = vehicleTypeBuilder.build();
/*
* define two depots, i.e. two vehicle locations ([10,10],[50,50]) and equip them with an infinite number of vehicles of type 'vehicleType'
*/
Builder vehicleBuilder1 = VehicleImpl.Builder.newInstance("vehicles@[10,10]");
vehicleBuilder1.setLocationCoord(Coordinate.newInstance(10, 10));
vehicleBuilder1.setType(vehicleType);
Vehicle vehicle1 = vehicleBuilder1.build();
Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[50,50]");
vehicleBuilder2.setLocationCoord(Coordinate.newInstance(50, 50));
vehicleBuilder2.setType(vehicleType);
Vehicle vehicle2 = vehicleBuilder2.build();
/*
* build shipments at the required locations, each with a capacity-demand of 1.
* 4 shipments
* 1: (5,7)->(6,9)
* 2: (5,13)->(6,11)
* 3: (15,7)->(14,9)
* 4: (15,13)->(14,11)
*/
Service shipment1 = Service.Builder.newInstance("1", 1).setCoord(Coordinate.newInstance(5, 7)).build();
Service shipment2 = Service.Builder.newInstance("2", 1).setCoord(Coordinate.newInstance(5, 13)).build();
Service shipment3 = Service.Builder.newInstance("3", 1).setCoord(Coordinate.newInstance(15, 7)).build();
Service shipment4 = Service.Builder.newInstance("4", 1).setCoord(Coordinate.newInstance(15, 13)).build();
Service shipment5 = Service.Builder.newInstance("5", 1).setCoord(Coordinate.newInstance(55, 57)).build();
Service shipment6 = Service.Builder.newInstance("6", 1).setCoord(Coordinate.newInstance(55, 63)).build();
Service shipment7 = Service.Builder.newInstance("7", 1).setCoord(Coordinate.newInstance(65, 57)).build();
Service shipment8 = Service.Builder.newInstance("8", 1).setCoord(Coordinate.newInstance(65, 63)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2);
vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
// vrpBuilder.setFleetSize(FleetSize.FINITE);
VehicleRoutingProblem problem = vrpBuilder.build();
/*
* get the algorithm out-of-the-box.
*/
VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig.xml");
algorithm.setNuOfIterations(10);
/*
* and search a solution
*/
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
/*
* get the best
*/
VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
/*
* write out problem and solution to xml-file
*/
new VrpXMLWriter(problem, solutions).write("output/shipment-problem-with-solution.xml");
/*
* print nRoutes and totalCosts of bestSolution
*/
SolutionPrinter.print(bestSolution);
/*
* plot problem without solution
*/
Plotter problemPlotter = new Plotter(problem);
problemPlotter.plotShipments(true);
problemPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_problem.png", "en-route pickup and delivery");
/*
* plot problem with solution
*/
Plotter solutionPlotter = new Plotter(problem,Arrays.asList(Solutions.bestOf(solutions).getRoutes().iterator().next()));
solutionPlotter.plotShipments(true);
solutionPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_solution.png", "en-route pickup and delivery");
new GraphStreamViewer(problem,Solutions.bestOf(solutions)).labelWith(Label.ACTIVITY).setRenderDelay(100).setRenderShipments(true).display();
}
}