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Code Issues Releases Wiki Activity

added egress/access calc

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oblonski 2014-02-10 16:23:42 +01:00
parent 9a471a58be
commit dc24411802
7 changed files with 135 additions and 34 deletions
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58
jsprit-core/src/main/java/jsprit/core/algorithm/recreate/AdditionalAccessEgressCalculator.java Normal file
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@ -0,0 +1,58 @@
package jsprit.core.algorithm.recreate;
import jsprit.core.problem.cost.VehicleRoutingTransportCosts;
import jsprit.core.problem.driver.Driver;
import jsprit.core.problem.misc.JobInsertionContext;
import jsprit.core.problem.solution.route.VehicleRoute;
import jsprit.core.problem.solution.route.activity.TourActivity;
import jsprit.core.problem.vehicle.Vehicle;
/**
* Estimates additional access/egress costs when operating route with a new vehicle that has different start/end-location.
*
* <p>If two vehicles have the same start/end-location and departure-time .getCosts(...) must return zero.
*
* @author schroeder
*
*/
class AdditionalAccessEgressCalculator {
private VehicleRoutingTransportCosts routingCosts;
/**
* Constructs the estimator that estimates additional access/egress costs when operating route with a new vehicle that has different start/end-location.
*
* <p>If two vehicles have the same start/end-location and departure-time .getCosts(...) must return zero.
*
* @author schroeder
*
*/
public AdditionalAccessEgressCalculator(VehicleRoutingTransportCosts routingCosts) {
this.routingCosts = routingCosts;
}
public double getCosts(JobInsertionContext insertionContext){
double delta_access = 0.0;
double delta_egress = 0.0;
VehicleRoute currentRoute = insertionContext.getRoute();
Vehicle newVehicle = insertionContext.getNewVehicle();
Driver newDriver = insertionContext.getNewDriver();
double newVehicleDepartureTime = insertionContext.getNewDepTime();
if(!currentRoute.isEmpty()){
double accessTransportCostNew = routingCosts.getTransportCost(newVehicle.getLocationId(), currentRoute.getActivities().get(0).getLocationId(), newVehicleDepartureTime, newDriver, newVehicle);
double accessTransportCostOld = routingCosts.getTransportCost(currentRoute.getStart().getLocationId(), currentRoute.getActivities().get(0).getLocationId(), currentRoute.getDepartureTime(), currentRoute.getDriver(), currentRoute.getVehicle());
delta_access = accessTransportCostNew - accessTransportCostOld;
TourActivity lastActivityBeforeEndOfRoute = currentRoute.getActivities().get(currentRoute.getActivities().size()-1);
double lastActivityEndTimeWithOldVehicleAndDepartureTime = lastActivityBeforeEndOfRoute.getEndTime();
double lastActivityEndTimeEstimationWithNewVehicleAndNewDepartureTime = Math.max(0.0, lastActivityEndTimeWithOldVehicleAndDepartureTime + (newVehicleDepartureTime - currentRoute.getDepartureTime()));
double egressTransportCostNew = routingCosts.getTransportCost(lastActivityBeforeEndOfRoute.getLocationId(), newVehicle.getLocationId() , lastActivityEndTimeEstimationWithNewVehicleAndNewDepartureTime, newDriver, newVehicle);
double egressTransportCostOld = routingCosts.getTransportCost(lastActivityBeforeEndOfRoute.getLocationId(), currentRoute.getEnd().getLocationId(), lastActivityEndTimeWithOldVehicleAndDepartureTime, currentRoute.getDriver(), currentRoute.getVehicle());
delta_egress = egressTransportCostNew - egressTransportCostOld;
}
return delta_access + delta_egress;
}
}

6
jsprit-core/src/main/java/jsprit/core/algorithm/recreate/ServiceInsertionCalculator.java
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@ -47,7 +47,7 @@ import org.apache.log4j.Logger;
*
*/
final class ServiceInsertionCalculator implements JobInsertionCostsCalculator{
private static final Logger logger = Logger.getLogger(ServiceInsertionCalculator.class);
private HardRouteStateLevelConstraint hardRouteLevelConstraint;
@ -63,6 +63,8 @@ final class ServiceInsertionCalculator implements JobInsertionCostsCalculator{
private ActivityInsertionCostsCalculator additionalTransportCostsCalculator;
private TourActivityFactory activityFactory;
private AdditionalAccessEgressCalculator additionalAccessEgressCalculator;
public ServiceInsertionCalculator(VehicleRoutingTransportCosts routingCosts, ActivityInsertionCostsCalculator additionalTransportCostsCalculator, ConstraintManager constraintManager) {
super();
@ -73,6 +75,7 @@ final class ServiceInsertionCalculator implements JobInsertionCostsCalculator{
softRouteConstraint = constraintManager;
this.additionalTransportCostsCalculator = additionalTransportCostsCalculator;
activityFactory = new DefaultTourActivityFactory();
additionalAccessEgressCalculator = new AdditionalAccessEgressCalculator(routingCosts);
logger.info("initialise " + this);
}
@ -100,6 +103,7 @@ final class ServiceInsertionCalculator implements JobInsertionCostsCalculator{
//from job2insert induced costs at route level
double additionalICostsAtRouteLevel = softRouteConstraint.getCosts(insertionContext);
additionalICostsAtRouteLevel += additionalAccessEgressCalculator.getCosts(insertionContext);
Service service = (Service)jobToInsert;
int insertionIndex = InsertionData.NO_INDEX;