Package jsprit.core.problem.constraint

Examples of jsprit.core.problem.constraint.ConstraintManager

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        VehicleRoutingAlgorithmBuilder vraBuilder = new VehicleRoutingAlgorithmBuilder(problem,"input/algorithmConfig.xml");
        vraBuilder.addCoreConstraints();
        vraBuilder.addDefaultCostCalculators();
        StateManager stateManager = new StateManager(problem);
        ConstraintManager constraintManager = new ConstraintManager(problem,stateManager);
        constraintManager.addConstraint(new ServiceDeliveriesFirstConstraint(), ConstraintManager.Priority.CRITICAL);
        vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
        VehicleRoutingAlgorithm algorithm = vraBuilder.build();

    /*
     * and search a solution
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    //build the problem
    VehicleRoutingProblem problem = vrpBuilder.build();

    StateManager stateManager = new StateManager(problem);
   
    ConstraintManager constraintManager = new ConstraintManager(problem, stateManager);
    constraintManager.addConstraint(wheelchair_bus_passenger_pickup_constraint);
   
    /*
     * get a sample algorithm.
     *
     * Note that you need to make sure to prohibit vehicle-switching by adding the insertion-tag <vehicleSwitchAllowed>false</vehicleSwitchAllowed>.
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        vraBuilder.addDefaultCostCalculators();

        StateManager stateManager = new StateManager(skillProblem);
        stateManager.updateSkillStates();

        ConstraintManager constraintManager = new ConstraintManager(skillProblem,stateManager);
        constraintManager.addSkillsConstraint();

        VehicleRoutingAlgorithm vra = vraBuilder.build();
//        vra.setNuOfIterations(500);

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     */
        VehicleRoutingAlgorithmBuilder vraBuilder = new VehicleRoutingAlgorithmBuilder(problem,"input/algorithmConfig.xml");
        vraBuilder.addCoreConstraints();
        vraBuilder.addDefaultCostCalculators();
        StateManager stateManager = new StateManager(problem);
        ConstraintManager constraintManager = new ConstraintManager(problem,stateManager);
        constraintManager.addConstraint(new ServiceDeliveriesFirstConstraint(), ConstraintManager.Priority.CRITICAL);
        vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
        VehicleRoutingAlgorithm algorithm = vraBuilder.build();
   
    /*
     * and search a solution
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//        StateFactory.StateId distanceStateId = StateFactory.createId("distance"); //v1.3.1
        StateId distanceStateId = stateManager.createStateId("distance"); //head of development - upcoming release (v1.4)
        stateManager.addStateUpdater(new DistanceUpdater(distanceStateId, stateManager, costMatrix));
//        stateManager.updateLoadStates();

        ConstraintManager constraintManager = new ConstraintManager(vrp,stateManager);
        constraintManager.addConstraint(new DistanceConstraint(120.,distanceStateId,stateManager,costMatrix), ConstraintManager.Priority.CRITICAL);
//        constraintManager.addLoadConstraint();

//        vraBuilder.addCoreConstraints();
        vraBuilder.addDefaultCostCalculators();
        vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
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        StateId latest_act_arrival_time_stateId = stateManager.createStateId("latest-act-arrival-time");
        //and make sure you update the activity-state "latest-activity-start-time" the way it is defined above
        stateManager.addStateUpdater(new UpdateLatestActivityStartTimes(latest_act_arrival_time_stateId, stateManager, routingCosts, nearestMessengers));
        stateManager.updateLoadStates();

        ConstraintManager constraintManager = new ConstraintManager(bicycleMessengerProblem,stateManager);
        constraintManager.addLoadConstraint();
        constraintManager.addConstraint(new ThreeTimesLessThanBestDirectRouteConstraint(latest_act_arrival_time_stateId,nearestMessengers,routingCosts,stateManager), ConstraintManager.Priority.CRITICAL);
        constraintManager.addConstraint(new IgnoreMessengerThatCanNeverMeetTimeRequirements(nearestMessengers, routingCosts));

        //create your algorithm
        VehicleRoutingAlgorithmBuilder vraBuilder = new VehicleRoutingAlgorithmBuilder(bicycleMessengerProblem,"input/algorithmConfig_open.xml");
//        vraBuilder.setNuOfThreads(2);
        vraBuilder.addDefaultCostCalculators();
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        StateId keyPicked = stateManager.createStateId("key-picked");
        StateId keyUsed = stateManager.createStateId("key-used");
        StateId keyDelivered = stateManager.createStateId("key-delivered");
        stateManager.addStateUpdater(new KeyStatusUpdater(stateManager,keyPicked,keyUsed,keyDelivered));

        ConstraintManager constraintManager = new ConstraintManager(vrp,stateManager);
        constraintManager.addConstraint(new GetUseAndDeliverKeySimpleHardActivityConstraint(stateManager,keyPicked,keyUsed,keyDelivered), ConstraintManager.Priority.CRITICAL);
        constraintManager.addConstraint(new GetUseAndDeliverHardRouteContraint(stateManager,keyPicked,keyUsed,keyDelivered));

        vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
        VehicleRoutingAlgorithm vra = vraBuilder.build();
        vra.setMaxIterations(100);
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     */
        VehicleRoutingAlgorithmBuilder vraBuilder = new VehicleRoutingAlgorithmBuilder(vrp,"input/algorithmConfig_solomon.xml");
        vraBuilder.addCoreConstraints();
        vraBuilder.addDefaultCostCalculators();
        StateManager stateManager = new StateManager(vrp);
        ConstraintManager constraintManager = new ConstraintManager(vrp,stateManager);
        constraintManager.addConstraint(new ServiceDeliveriesFirstConstraint(), ConstraintManager.Priority.CRITICAL);
        vraBuilder.setStateAndConstraintManager(stateManager,constraintManager);
        VehicleRoutingAlgorithm vra = vraBuilder.build();
        vra.getAlgorithmListeners().addListener(new AlgorithmSearchProgressChartListener("output/sol_progress.png"));
    /*
     * Solve the problem.
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    stateManager.addStateUpdater(new UpdateVariableCosts(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager));
   
    /*
     * constructs a constraintManager that manages the various hardConstraints (and soon also softConstraints)
     */
    ConstraintManager constraintManager = new ConstraintManager(vrp,stateManager);
    /*
     * tells constraintManager to add timeWindowConstraints
     */
    constraintManager.addTimeWindowConstraint();
    /*
     * tells constraintManager to add loadConstraints
     */
    constraintManager.addLoadConstraint();
    /*
     * add an arbitrary number of hardConstraints by
     * constraintManager.addConstraint(...)
     */
   
 
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Related Classes of jsprit.core.problem.constraint.ConstraintManager

  • jsprit.core.algorithm.BuildCVRPAlgoFromScratch_IT
  • jsprit.core.algorithm.BuildPDVRPAlgoFromScratch_IT
  • jsprit.core.algorithm.BuildPDVRPWithShipmentsAlgoFromScratch_IT
  • jsprit.core.algorithm.DeactivateTimeWindowsTest
  • jsprit.core.algorithm.io.VehicleRoutingAlgorithms
  • jsprit.core.algorithm.recreate.ServiceInsertionAndLoadConstraintsTest
  • jsprit.core.algorithm.recreate.TestCalculatesServiceInsertion
  • jsprit.core.algorithm.recreate.TestCalculatesServiceInsertionOnRouteLevel
  • jsprit.core.algorithm.recreate.TestMixedServiceAndShipmentsProblemOnRouteLevel
  • jsprit.core.algorithm.recreate.TestRouteLevelServiceInsertionCostEstimator
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