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add example for variable start and waiting time

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oblonski 2015-07-29 21:18:22 +02:00
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commit adeceb2640
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jsprit-examples/src/main/java/jsprit/examples/VariableStartAndWaitingTimeExample.java Normal file
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package jsprit.examples;
import jsprit.analysis.toolbox.AlgorithmSearchProgressChartListener;
import jsprit.analysis.toolbox.Plotter;
import jsprit.core.algorithm.VehicleRoutingAlgorithm;
import jsprit.core.algorithm.box.Jsprit;
import jsprit.core.algorithm.state.StateManager;
import jsprit.core.algorithm.state.UpdateDepartureTime;
import jsprit.core.algorithm.state.UpdateTimeSlack;
import jsprit.core.problem.Location;
import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.constraint.ConstraintManager;
import jsprit.core.problem.job.Service;
import jsprit.core.problem.solution.SolutionCostCalculator;
import jsprit.core.problem.solution.VehicleRoutingProblemSolution;
import jsprit.core.problem.solution.route.VehicleRoute;
import jsprit.core.problem.solution.route.activity.TimeWindow;
import jsprit.core.problem.solution.route.activity.TourActivity;
import jsprit.core.problem.vehicle.VehicleImpl;
import jsprit.core.problem.vehicle.VehicleTypeImpl;
import jsprit.core.reporting.SolutionPrinter;
import jsprit.core.util.RandomNumberGeneration;
import jsprit.core.util.Solutions;
import java.util.Random;
/**
* Created by schroeder on 23/07/15.
*/
public class VariableStartAndWaitingTimeExample {
static interface AlgorithmFactory {
VehicleRoutingAlgorithm createAlgorithm(VehicleRoutingProblem vrp);
}
public static void main(String[] args) {
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerDistance(1.5).setCostPerWaitingTime(1.0).build();
VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build();
VehicleImpl v3 = VehicleImpl.Builder.newInstance("v3").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build();
VehicleImpl v4 = VehicleImpl.Builder.newInstance("v4").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
Random r = RandomNumberGeneration.newInstance();
for(int i=0;i<20;i++){
Service s = Service.Builder.newInstance("s_"+i)
// .setTimeWindow(TimeWindow.newInstance(r.nextInt(50),100+r.nextInt(150)))
.setLocation(Location.newInstance(1 - r.nextInt(5), 10 + r.nextInt(10))).build();
vrpBuilder.addJob(s);
}
Service s1 = Service.Builder.newInstance("s12").setLocation(Location.newInstance(-3, 15)).setTimeWindow(TimeWindow.newInstance(20, 40)).build();
// Service s4 = Service.Builder.newInstance("s13").setLocation(Location.newInstance(5,15)).setTimeWindow(TimeWindow.newInstance(100, 160)).build();
Service s2 = Service.Builder.newInstance("s10").setLocation(Location.newInstance(-1, 15)).setTimeWindow(TimeWindow.newInstance(200, 210)).build();
Service s3 = Service.Builder.newInstance("s11").setLocation(Location.newInstance(10, 10)).setTimeWindow(TimeWindow.newInstance(300, 310)).build();
vrpBuilder.addJob(s1).addJob(s2).addJob(s3).addVehicle(v4).addVehicle(v2).addVehicle(v3);
vrpBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE);
final VehicleRoutingProblem vrp = vrpBuilder.build();
AlgorithmFactory algorithmFactory = new AlgorithmFactory() {
@Override
public VehicleRoutingAlgorithm createAlgorithm(final VehicleRoutingProblem vrp) {
StateManager stateManager = new StateManager(vrp);
stateManager.addStateUpdater(new UpdateDepartureTime(vrp.getTransportCosts()));
stateManager.addStateUpdater(new UpdateTimeSlack(stateManager,vrp.getTransportCosts()));
ConstraintManager constraintManager = new ConstraintManager(vrp,stateManager);
return Jsprit.Builder.newInstance(vrp)
.addCoreStateAndConstraintStuff(true)
.setStateAndConstraintManager(stateManager, constraintManager)
.setProperty(Jsprit.Parameter.THRESHOLD_INI, "0.1")
.setProperty(Jsprit.Parameter.THRESHOLD_ALPHA, "0.3")
// .setProperty(Parameter.)
// .setProperty(Jsprit.Parameter.CONSTRUCTION, Jsprit.Construction.BEST_INSERTION.toString())
.setObjectiveFunction(new SolutionCostCalculator() {
@Override
public double getCosts(VehicleRoutingProblemSolution solution) {
double costs = 0.;
for (VehicleRoute route : solution.getRoutes()) {
costs += route.getVehicle().getType().getVehicleCostParams().fix;
TourActivity prevAct = route.getStart();
for (TourActivity act : route.getActivities()) {
costs += vrp.getTransportCosts().getTransportCost(prevAct.getLocation(), act.getLocation(), prevAct.getEndTime(), route.getDriver(), route.getVehicle());
costs += vrp.getActivityCosts().getActivityCost(act, act.getArrTime(), route.getDriver(), route.getVehicle());
prevAct = act;
}
costs += vrp.getTransportCosts().getTransportCost(prevAct.getLocation(), route.getEnd().getLocation(), prevAct.getEndTime(), route.getDriver(), route.getVehicle());
}
costs += solution.getUnassignedJobs().size() * 200;
return costs;
}
})
.buildAlgorithm();
}
};
VehicleRoutingAlgorithm vra = algorithmFactory.createAlgorithm(vrp);
vra.setMaxIterations(1000);
vra.addListener(new AlgorithmSearchProgressChartListener("output/search"));
VehicleRoutingProblemSolution solution = Solutions.bestOf(vra.searchSolutions());
System.out.println("c: " + solution.getCost());
SolutionPrinter.print(vrp, solution, SolutionPrinter.Print.VERBOSE);
new Plotter(vrp,solution).setLabel(Plotter.Label.ID).plot("output/plot","plot");
}
}