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Code Issues Releases Wiki Activity

constraints and example

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This commit is contained in:
oblonski 2013-11-07 06:39:24 +01:00
parent 690bcb532a
commit 0936d461f5
4 changed files with 6191 additions and 27 deletions
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87
jsprit-core/src/main/java/algorithms/HardConstraints.java
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@ -25,8 +25,12 @@ import basics.Delivery;
import basics.Pickup;
import basics.Service;
import basics.costs.VehicleRoutingTransportCosts;
import basics.route.DeliverService;
import basics.route.DeliverShipment;
import basics.route.DeliveryActivity;
import basics.route.PickupActivity;
import basics.route.PickupService;
import basics.route.PickupShipment;
import basics.route.ServiceActivity;
import basics.route.Start;
import basics.route.TourActivity;
@ -222,13 +226,28 @@ class HardConstraints {
private StateManager stateManager;
private boolean backhaul = false;
public HardPickupAndDeliveryActivityLevelConstraint(StateManager stateManager) {
super();
this.stateManager = stateManager;
}
public HardPickupAndDeliveryActivityLevelConstraint(StateManager stateManager, boolean backhaul) {
super();
this.stateManager = stateManager;
this.backhaul = backhaul;
}
@Override
public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
if(!(newAct instanceof PickupService) && !(newAct instanceof DeliverService)){
return true;
}
if(backhaul){
if(newAct instanceof PickupService && nextAct instanceof DeliverService){ return false; }
if(newAct instanceof DeliverService && prevAct instanceof PickupService){ return false; }
}
int loadAtPrevAct;
int futurePicks;
int pastDeliveries;
@ -242,12 +261,12 @@ class HardConstraints {
futurePicks = (int) stateManager.getActivityState(prevAct, StateTypes.FUTURE_PICKS).toDouble();
pastDeliveries = (int) stateManager.getActivityState(prevAct, StateTypes.PAST_DELIVERIES).toDouble();
}
if(newAct instanceof PickupActivity || newAct instanceof ServiceActivity){
if(newAct instanceof PickupService){
if(loadAtPrevAct + newAct.getCapacityDemand() + futurePicks > iFacts.getNewVehicle().getCapacity()){
return false;
}
}
if(newAct instanceof DeliveryActivity){
if(newAct instanceof DeliverService){
if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) + pastDeliveries > iFacts.getNewVehicle().getCapacity()){
return false;
}
@ -257,6 +276,62 @@ class HardConstraints {
}
}
static class HardPickupAndDeliveryShipmentActivityLevelConstraint implements HardActivityLevelConstraint {
private StateManager stateManager;
private boolean backhaul = false;
public HardPickupAndDeliveryShipmentActivityLevelConstraint(StateManager stateManager) {
super();
this.stateManager = stateManager;
}
public HardPickupAndDeliveryShipmentActivityLevelConstraint(StateManager stateManager, boolean backhaul) {
super();
this.stateManager = stateManager;
this.backhaul = backhaul;
}
@Override
public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
if(!(newAct instanceof PickupShipment) && !(newAct instanceof DeliverShipment)){
return true;
}
if(backhaul){
// if(newAct instanceof PickupShipment && nextAct instanceof DeliverShipment){ return false; }
if(newAct instanceof DeliverShipment && prevAct instanceof PickupShipment){ return false; }
}
int loadAtPrevAct;
// int futurePicks;
// int pastDeliveries;
if(prevAct instanceof Start){
loadAtPrevAct = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD_AT_DEPOT).toDouble();
// futurePicks = (int)stateManager.getRouteState(iFacts.getRoute(), StateTypes.LOAD).toDouble();
// pastDeliveries = 0;
}
else{
loadAtPrevAct = (int) stateManager.getActivityState(prevAct, StateTypes.LOAD).toDouble();
// futurePicks = (int) stateManager.getActivityState(prevAct, StateTypes.FUTURE_PICKS).toDouble();
// pastDeliveries = (int) stateManager.getActivityState(prevAct, StateTypes.PAST_DELIVERIES).toDouble();
}
if(newAct instanceof PickupShipment){
if(loadAtPrevAct + newAct.getCapacityDemand() > iFacts.getNewVehicle().getCapacity()){
return false;
}
}
if(newAct instanceof DeliverShipment){
if(loadAtPrevAct + Math.abs(newAct.getCapacityDemand()) > iFacts.getNewVehicle().getCapacity()){
return false;
}
}
return true;
}
}
static class HardPickupAndDeliveryBackhaulActivityLevelConstraint implements HardActivityLevelConstraint {
@ -269,10 +344,10 @@ class HardConstraints {
@Override
public boolean fulfilled(InsertionContext iFacts, TourActivity prevAct, TourActivity newAct, TourActivity nextAct, double prevActDepTime) {
if(newAct instanceof PickupActivity && nextAct instanceof DeliveryActivity){ return false; }
if(newAct instanceof ServiceActivity && nextAct instanceof DeliveryActivity){ return false; }
if(newAct instanceof DeliveryActivity && prevAct instanceof PickupActivity){ return false; }
if(newAct instanceof DeliveryActivity && prevAct instanceof ServiceActivity){ return false; }
if(newAct instanceof PickupService && nextAct instanceof DeliverService){ return false; }
// if(newAct instanceof ServiceActivity && nextAct instanceof DeliveryActivity){ return false; }
if(newAct instanceof DeliverService && prevAct instanceof PickupService){ return false; }
// if(newAct instanceof DeliveryActivity && prevAct instanceof ServiceActivity){ return false; }
int loadAtPrevAct;
int futurePicks;
int pastDeliveries;

40
jsprit-core/src/test/java/algorithms/BuildPDVRPWithShipmentsAlgoFromScratchTest.java
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@ -22,7 +22,6 @@ import org.apache.log4j.Logger;
import org.junit.Before;
import org.junit.Test;
import util.Coordinate;
import util.Solutions;
import algorithms.HardConstraints.HardActivityLevelConstraintManager;
import algorithms.StateManager.StateImpl;
@ -45,12 +44,10 @@ import basics.algo.JobInsertedListener;
import basics.algo.SearchStrategy;
import basics.algo.SearchStrategyManager;
import basics.algo.SolutionCostCalculator;
import basics.io.VrpXMLReader;
import basics.io.VrpXMLWriter;
import basics.route.TourActivity;
import basics.route.Vehicle;
import basics.route.VehicleImpl;
import basics.route.VehicleRoute;
import basics.route.VehicleType;
import basics.route.VehicleTypeImpl;
public class BuildPDVRPWithShipmentsAlgoFromScratchTest {
@ -64,26 +61,27 @@ public class BuildPDVRPWithShipmentsAlgoFromScratchTest {
public void setup(){
VehicleRoutingProblem.Builder builder = VehicleRoutingProblem.Builder.newInstance();
VehicleType type = VehicleTypeImpl.Builder.newInstance("t", 2).setCostPerDistance(1.0).build();
Vehicle v = VehicleImpl.Builder.newInstance("v").setLocationCoord(Coordinate.newInstance(-1, -1)).setType(type).build();
Shipment s1 = Shipment.Builder.newInstance("s1", 1).setPickupCoord(Coordinate.newInstance(0, 0)).setDeliveryCoord(Coordinate.newInstance(10, 10)).build();
Shipment s2 = Shipment.Builder.newInstance("s2", 1).setPickupCoord(Coordinate.newInstance(1, 1)).setDeliveryCoord(Coordinate.newInstance(10, 10)).build();
Service serv1 = Service.Builder.newInstance("serv1", 1).setCoord(Coordinate.newInstance(0, 5)).build();
Service serv2 = Service.Builder.newInstance("serv2", 1).setCoord(Coordinate.newInstance(5, 0)).build();
builder.addJob(s1).addJob(s2).addJob(serv1).addJob(serv2);
builder.addVehicle(v);
new VrpXMLReader(builder).read("src/test/resources/C101_solomon_pd.xml");
// VehicleType type = VehicleTypeImpl.Builder.newInstance("t", 2).setCostPerDistance(1.0).build();
// Vehicle v = VehicleImpl.Builder.newInstance("v").setLocationCoord(Coordinate.newInstance(-1, -1)).setType(type).build();
//
// Shipment s1 = Shipment.Builder.newInstance("s1", 1).setPickupCoord(Coordinate.newInstance(0, 0)).setDeliveryCoord(Coordinate.newInstance(10, 10)).build();
// Shipment s2 = Shipment.Builder.newInstance("s2", 1).setPickupCoord(Coordinate.newInstance(1, 1)).setDeliveryCoord(Coordinate.newInstance(10, 10)).build();
//
// Service serv1 = Service.Builder.newInstance("serv1", 1).setCoord(Coordinate.newInstance(0, 5)).build();
// Service serv2 = Service.Builder.newInstance("serv2", 1).setCoord(Coordinate.newInstance(5, 0)).build();
//
// builder.addJob(s1).addJob(s2).addJob(serv1).addJob(serv2);
// builder.addVehicle(v);
vrp = builder.build();
final StateManagerImpl stateManager = new StateManagerImpl();
HardActivityLevelConstraintManager actLevelConstraintAccumulator = new HardActivityLevelConstraintManager();
actLevelConstraintAccumulator.addConstraint(new HardConstraints.HardPickupAndDeliveryActivityLevelConstraint(stateManager));
actLevelConstraintAccumulator.addConstraint(new HardConstraints.HardTimeWindowActivityLevelConstraint(stateManager, vrp.getTransportCosts()));
actLevelConstraintAccumulator.addConstraint(new HardConstraints.HardPickupAndDeliveryActivityLevelConstraint(stateManager));
actLevelConstraintAccumulator.addConstraint(new HardConstraints.HardPickupAndDeliveryShipmentActivityLevelConstraint(stateManager));
ActivityInsertionCostsCalculator marginalCalculus = new LocalActivityInsertionCostsCalculator(vrp.getTransportCosts(), vrp.getActivityCosts(), actLevelConstraintAccumulator);
@ -200,8 +198,8 @@ public class BuildPDVRPWithShipmentsAlgoFromScratchTest {
// System.out.println("ini: costs="+iniSolution.getCost()+";#routes="+iniSolution.getRoutes().size());
vra.addInitialSolution(iniSolution);
vra.setNuOfIterations(10000);
vra.setPrematureBreak(1000);
vra.setNuOfIterations(1000);
vra.setPrematureBreak(100);
}
@ -222,7 +220,7 @@ public class BuildPDVRPWithShipmentsAlgoFromScratchTest {
// for()
// new VrpXMLWriter(vrp, solutions).write("output/pd_solomon_r101.xml");
new VrpXMLWriter(vrp, solutions).write("src/test/resources/pd_solomon_c101_sol.xml");
}

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jsprit-core/src/test/resources/C101_solomon_pd.xml Normal file
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3556
jsprit-core/src/test/resources/pd_solomon_c101_sol.xml Normal file
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