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171 lines
8.9 KiB
Java
171 lines
8.9 KiB
Java
/*******************************************************************************
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* Copyright (C) 2014 Stefan Schroeder
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3.0 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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package jsprit.examples;
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import jsprit.analysis.toolbox.GraphStreamViewer;
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import jsprit.analysis.toolbox.GraphStreamViewer.Label;
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import jsprit.analysis.toolbox.Plotter;
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import jsprit.core.algorithm.VehicleRoutingAlgorithm;
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import jsprit.core.algorithm.io.VehicleRoutingAlgorithms;
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import jsprit.core.problem.Location;
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import jsprit.core.problem.VehicleRoutingProblem;
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import jsprit.core.problem.VehicleRoutingProblem.FleetSize;
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import jsprit.core.problem.io.VrpXMLWriter;
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import jsprit.core.problem.job.Shipment;
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import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
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import jsprit.core.problem.vehicle.VehicleImpl;
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import jsprit.core.problem.vehicle.VehicleImpl.Builder;
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import jsprit.core.problem.vehicle.VehicleType;
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import jsprit.core.problem.vehicle.VehicleTypeImpl;
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import jsprit.core.reporting.SolutionPrinter;
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import jsprit.core.util.Coordinate;
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import jsprit.core.util.Solutions;
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import jsprit.util.Examples;
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import java.util.Arrays;
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import java.util.Collection;
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public class EnRoutePickupAndDeliveryWithMultipleDepotsAndOpenRoutesExample {
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public static void main(String[] args) {
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/*
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* some preparation - create output folder
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*/
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Examples.createOutputFolder();
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/*
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* get a vehicle type-builder and build a type with the typeId "vehicleType" and a capacity of 2
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*/
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VehicleTypeImpl.Builder vehicleTypeBuilder = VehicleTypeImpl.Builder.newInstance("vehicleType").addCapacityDimension(0, 2);
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vehicleTypeBuilder.setCostPerDistance(1.0);
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VehicleType vehicleType = vehicleTypeBuilder.build();
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/*
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* define two vehicles and their start-locations
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*
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* the first two do need to return to depot
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*/
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Builder vehicleBuilder1 = VehicleImpl.Builder.newInstance("vehicles@[10,10]");
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vehicleBuilder1.setStartLocation(loc(Coordinate.newInstance(10, 10))).setReturnToDepot(false);
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vehicleBuilder1.setType(vehicleType);
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VehicleImpl vehicle1 = vehicleBuilder1.build();
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Builder vehicleBuilder2 = VehicleImpl.Builder.newInstance("vehicles@[30,30]");
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vehicleBuilder2.setStartLocation(loc(Coordinate.newInstance(30, 30))).setReturnToDepot(false);
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vehicleBuilder2.setType(vehicleType);
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VehicleImpl vehicle2 = vehicleBuilder2.build();
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Builder vehicleBuilder3 = VehicleImpl.Builder.newInstance("vehicles@[10,30]");
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vehicleBuilder3.setStartLocation(loc(Coordinate.newInstance(10, 30)));
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vehicleBuilder3.setType(vehicleType);
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VehicleImpl vehicle3 = vehicleBuilder3.build();
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Builder vehicleBuilder4 = VehicleImpl.Builder.newInstance("vehicles@[30,10]");
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vehicleBuilder4.setStartLocation(loc(Coordinate.newInstance(30, 10)));
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vehicleBuilder4.setType(vehicleType);
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VehicleImpl vehicle4 = vehicleBuilder4.build();
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/*
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* build shipments at the required locations, each with a capacity-demand of 1.
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*/
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Shipment shipment1 = Shipment.Builder.newInstance("1").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(5, 7))).setDeliveryLocation(loc(Coordinate.newInstance(6, 9))).build();
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Shipment shipment2 = Shipment.Builder.newInstance("2").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(5, 13))).setDeliveryLocation(loc(Coordinate.newInstance(6, 11))).build();
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Shipment shipment3 = Shipment.Builder.newInstance("3").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(15, 7))).setDeliveryLocation(loc(Coordinate.newInstance(14, 9))).build();
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Shipment shipment4 = Shipment.Builder.newInstance("4").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(15, 13))).setDeliveryLocation(loc(Coordinate.newInstance(14, 11))).build();
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Shipment shipment5 = Shipment.Builder.newInstance("5").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(25, 27))).setDeliveryLocation(loc(Coordinate.newInstance(26, 29))).build();
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Shipment shipment6 = Shipment.Builder.newInstance("6").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(25, 33))).setDeliveryLocation(loc(Coordinate.newInstance(26, 31))).build();
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Shipment shipment7 = Shipment.Builder.newInstance("7").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(35, 27))).setDeliveryLocation(loc(Coordinate.newInstance(34, 29))).build();
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Shipment shipment8 = Shipment.Builder.newInstance("8").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(35, 33))).setDeliveryLocation(loc(Coordinate.newInstance(34, 31))).build();
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Shipment shipment9 = Shipment.Builder.newInstance("9").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(5, 27))).setDeliveryLocation(loc(Coordinate.newInstance(6, 29))).build();
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Shipment shipment10 = Shipment.Builder.newInstance("10").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(5, 33))).setDeliveryLocation(loc(Coordinate.newInstance(6, 31))).build();
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Shipment shipment11 = Shipment.Builder.newInstance("11").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(15, 27))).setDeliveryLocation(loc(Coordinate.newInstance(14, 29))).build();
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Shipment shipment12 = Shipment.Builder.newInstance("12").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(15, 33))).setDeliveryLocation(loc(Coordinate.newInstance(14, 31))).build();
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Shipment shipment13 = Shipment.Builder.newInstance("13").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(25, 7))).setDeliveryLocation(loc(Coordinate.newInstance(26, 9))).build();
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Shipment shipment14 = Shipment.Builder.newInstance("14").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(25, 13))).setDeliveryLocation(loc(Coordinate.newInstance(26, 11))).build();
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Shipment shipment15 = Shipment.Builder.newInstance("15").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(35, 7))).setDeliveryLocation(loc(Coordinate.newInstance(34, 9))).build();
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Shipment shipment16 = Shipment.Builder.newInstance("16").addSizeDimension(0, 1).setPickupLocation(loc(Coordinate.newInstance(35, 13))).setDeliveryLocation(loc(Coordinate.newInstance(34, 11))).build();
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VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
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vrpBuilder.addVehicle(vehicle1).addVehicle(vehicle2).addVehicle(vehicle3).addVehicle(vehicle4);
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vrpBuilder.addJob(shipment1).addJob(shipment2).addJob(shipment3).addJob(shipment4);
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vrpBuilder.addJob(shipment5).addJob(shipment6).addJob(shipment7).addJob(shipment8);
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vrpBuilder.addJob(shipment9).addJob(shipment10).addJob(shipment11).addJob(shipment12);
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vrpBuilder.addJob(shipment13).addJob(shipment14).addJob(shipment15).addJob(shipment16);
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vrpBuilder.setFleetSize(FleetSize.FINITE);
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VehicleRoutingProblem problem = vrpBuilder.build();
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/*
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* get the algorithm out-of-the-box.
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*/
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VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(problem, "input/algorithmConfig.xml");
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// algorithm.setMaxIterations(30000);
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/*
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* and search a solution
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*/
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Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
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/*
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* get the best
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*/
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VehicleRoutingProblemSolution bestSolution = Solutions.bestOf(solutions);
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/*
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* write out problem and solution to xml-file
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*/
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new VrpXMLWriter(problem, solutions).write("output/shipment-problem-with-solution.xml");
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/*
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* print nRoutes and totalCosts of bestSolution
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*/
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SolutionPrinter.print(bestSolution);
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/*
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* plot problem without solution
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*/
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Plotter problemPlotter = new Plotter(problem);
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problemPlotter.plotShipments(true);
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problemPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_problem.png", "en-route pickup and delivery");
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/*
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* plot problem with solution
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*/
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Plotter solutionPlotter = new Plotter(problem,Arrays.asList(Solutions.bestOf(solutions).getRoutes().iterator().next()));
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solutionPlotter.plotShipments(true);
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solutionPlotter.plot("output/enRoutePickupAndDeliveryWithMultipleLocationsExample_solution.png", "en-route pickup and delivery");
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new GraphStreamViewer(problem,Solutions.bestOf(solutions)).labelWith(Label.ACTIVITY).setRenderDelay(100).setRenderShipments(true).display();
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}
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private static Location loc(Coordinate coordinate){
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return Location.Builder.newInstance().setCoordinate(coordinate).build();
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}
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}
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