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add bicycle-messenger-example

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Stefan Schroeder 2013-11-29 15:03:01 +01:00
parent 2291bd23c2
commit 381e348926
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jsprit-examples/src/main/java/jsprit/examples/BicycleMessenger.java Normal file
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package jsprit.examples;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Collection;
import jsprit.analysis.toolbox.Plotter;
import jsprit.analysis.toolbox.SolutionPrinter;
import jsprit.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.io.VehicleRoutingAlgorithms;
import jsprit.core.algorithm.termination.IterationWithoutImprovementTermination;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.VehicleRoutingProblem.Builder;
import jsprit.core.problem.VehicleRoutingProblem.FleetSize;
import jsprit.core.problem.job.Shipment;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.vehicle.Vehicle;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleType;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.util.Coordinate;
import jsprit.core.util.Solutions;
public class BicycleMessenger {
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
VehicleRoutingProblem.Builder problemBuilder = VehicleRoutingProblem.Builder.newInstance();
readEnvelopes(problemBuilder);
readMessengers(problemBuilder);
problemBuilder.setFleetSize(FleetSize.FINITE);
VehicleRoutingProblem bicycleMessengerProblem = problemBuilder.build();
VehicleRoutingAlgorithm algorithm = VehicleRoutingAlgorithms.readAndCreateAlgorithm(bicycleMessengerProblem, 6, "input/algorithmConfig_open.xml");
algorithm.setPrematureAlgorithmTermination(new IterationWithoutImprovementTermination(50));
Collection<VehicleRoutingProblemSolution> solutions = algorithm.searchSolutions();
SolutionPrinter.print(Solutions.bestOf(solutions));
Plotter plotter = new Plotter(bicycleMessengerProblem);
plotter.plotShipments(true);
plotter.plot("output/bicycleMessengerProblem.png", "bicycleMenssenger");
Plotter plotter1 = new Plotter(bicycleMessengerProblem, Solutions.bestOf(solutions));
plotter1.plotShipments(false);
plotter1.plot("output/bicycleMessengerSolution.png", "bicycleMenssenger");
}
private static void readEnvelopes(Builder problemBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/bicycle_messenger_demand.txt")));
String line = null;
boolean firstLine = true;
while((line = reader.readLine()) != null){
if(firstLine) { firstLine = false; continue; }
String[] tokens = line.split("\\s+");
Shipment envelope = Shipment.Builder.newInstance(tokens[1], 1).setPickupCoord(Coordinate.newInstance(Double.parseDouble(tokens[2]), Double.parseDouble(tokens[3])))
.setDeliveryCoord(Coordinate.newInstance(Double.parseDouble(tokens[4]), Double.parseDouble(tokens[5]))).build();
problemBuilder.addJob(envelope);
}
reader.close();
}
private static void readMessengers(Builder problemBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/bicycle_messenger_supply.txt")));
String line = null;
boolean firstLine = true;
VehicleType messengerType = VehicleTypeImpl.Builder.newInstance("messengerType", 15).setCostPerDistance(1).build();
while((line = reader.readLine()) != null){
if(firstLine) { firstLine = false; continue; }
String[] tokens = line.split("\\s+");
Vehicle vehicle = VehicleImpl.Builder.newInstance(tokens[1]).setLocationCoord(Coordinate.newInstance(Double.parseDouble(tokens[2]), Double.parseDouble(tokens[3])))
.setReturnToDepot(false).setType(messengerType).build();
problemBuilder.addVehicle(vehicle);
}
reader.close();
}
}