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Code Issues Releases Wiki Activity

refine insertion calc

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oblonski 2015-07-30 21:24:54 +02:00
parent adeceb2640
commit 9717926b8e
5 changed files with 375 additions and 42 deletions
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11
jsprit-core/src/main/java/jsprit/core/algorithm/recreate/LocalActivityInsertionCostsCalculator.java
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@ -95,6 +95,7 @@ class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCal
double tp_costs_newAct_nextAct = routingCosts.getTransportCost(newAct.getLocation(), nextAct.getLocation(), newAct_endTime, iFacts.getNewDriver(), iFacts.getNewVehicle()); double tp_costs_newAct_nextAct = routingCosts.getTransportCost(newAct.getLocation(), nextAct.getLocation(), newAct_endTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
double tp_time_newAct_nextAct = routingCosts.getTransportTime(newAct.getLocation(), nextAct.getLocation(), newAct_endTime, iFacts.getNewDriver(), iFacts.getNewVehicle()); double tp_time_newAct_nextAct = routingCosts.getTransportTime(newAct.getLocation(), nextAct.getLocation(), newAct_endTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
double nextAct_arrTime = newAct_endTime + tp_time_newAct_nextAct; double nextAct_arrTime = newAct_endTime + tp_time_newAct_nextAct;
double endTime_nextAct_new = CalculationUtils.getActivityEndTime(nextAct_arrTime, nextAct);
double act_costs_nextAct = activityCosts.getActivityCost(nextAct, nextAct_arrTime, iFacts.getNewDriver(), iFacts.getNewVehicle()); double act_costs_nextAct = activityCosts.getActivityCost(nextAct, nextAct_arrTime, iFacts.getNewDriver(), iFacts.getNewVehicle());
if(hasVariableDeparture(iFacts.getNewVehicle())){ if(hasVariableDeparture(iFacts.getNewVehicle())){
@ -110,7 +111,8 @@ class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCal
} }
else{ else{
double tp_costs_prevAct_nextAct = routingCosts.getTransportCost(prevAct.getLocation(), nextAct.getLocation(), prevAct.getEndTime(), iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle()); double tp_costs_prevAct_nextAct = routingCosts.getTransportCost(prevAct.getLocation(), nextAct.getLocation(), prevAct.getEndTime(), iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle());
double arrTime_nextAct = prevAct.getEndTime() + routingCosts.getTransportTime(prevAct.getLocation(), nextAct.getLocation(), prevAct.getEndTime(), iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle()); double arrTime_nextAct = depTimeAtPrevAct + routingCosts.getTransportTime(prevAct.getLocation(), nextAct.getLocation(), prevAct.getEndTime(), iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle());
double endTime_nextAct_old = CalculationUtils.getActivityEndTime(arrTime_nextAct,nextAct);
double actCost_nextAct = activityCosts.getActivityCost(nextAct, arrTime_nextAct, iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle()); double actCost_nextAct = activityCosts.getActivityCost(nextAct, arrTime_nextAct, iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle());
if(isStart(prevAct) && hasVariableDeparture(iFacts.getRoute().getVehicle())) { if(isStart(prevAct) && hasVariableDeparture(iFacts.getRoute().getVehicle())) {
actCost_nextAct = 0; actCost_nextAct = 0;
@ -118,7 +120,12 @@ class LocalActivityInsertionCostsCalculator implements ActivityInsertionCostsCal
else if(hasVariableDeparture(iFacts.getRoute().getVehicle())){ else if(hasVariableDeparture(iFacts.getRoute().getVehicle())){
actCost_nextAct = activityCosts.getActivityCost(nextAct, arrTime_nextAct + slack_time_prev, iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle()); actCost_nextAct = activityCosts.getActivityCost(nextAct, arrTime_nextAct + slack_time_prev, iFacts.getRoute().getDriver(), iFacts.getRoute().getVehicle());
} }
oldCosts = tp_costs_prevAct_nextAct + solutionCompletenessRatio * activityCostsWeight * actCost_nextAct; double endTimeDelay_nextAct = Math.max(0,endTime_nextAct_new - endTime_nextAct_old);
Double futureWaiting = stateManager.getActivityState(nextAct,iFacts.getRoute().getVehicle(),InternalStates.FUTURE_WAITING,Double.class);
if(futureWaiting == null) futureWaiting = 0.;
double waitingTime_savings_timeUnit = Math.min(futureWaiting,endTimeDelay_nextAct);
double waitingTime_savings = waitingTime_savings_timeUnit * iFacts.getRoute().getVehicle().getType().getVehicleCostParams().perWaitingTimeUnit;
oldCosts = tp_costs_prevAct_nextAct + solutionCompletenessRatio * activityCostsWeight * ( actCost_nextAct + waitingTime_savings);
} }
return totalCosts - oldCosts; return totalCosts - oldCosts;
} }

2
jsprit-core/src/main/java/jsprit/core/algorithm/state/InternalStates.java
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@ -46,4 +46,6 @@ public class InternalStates {
public static final StateId WAITING = new StateFactory.StateIdImpl("waiting",11); public static final StateId WAITING = new StateFactory.StateIdImpl("waiting",11);
public static final StateId TIME_SLACK = new StateFactory.StateIdImpl("time_slack",12); public static final StateId TIME_SLACK = new StateFactory.StateIdImpl("time_slack",12);
public static final StateId FUTURE_WAITING = new StateFactory.StateIdImpl("future_waiting",13);
} }

60
jsprit-core/src/main/java/jsprit/core/algorithm/state/UpdateFutureWaitingTimes.java Normal file
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@ -0,0 +1,60 @@
/*******************************************************************************
* Copyright (C) 2014 Stefan Schroeder
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3.0 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
package jsprit.core.algorithm.state;
import jsprit.core.problem.cost.VehicleRoutingTransportCosts;
import jsprit.core.problem.solution.route.VehicleRoute;
import jsprit.core.problem.solution.route.activity.ReverseActivityVisitor;
import jsprit.core.problem.solution.route.activity.TourActivity;
/**
* Updates and memorizes latest operation start times at activities.
*
* @author schroeder
*
*/
public class UpdateFutureWaitingTimes implements ReverseActivityVisitor, StateUpdater{
private StateManager states;
private VehicleRoute route;
private VehicleRoutingTransportCosts transportCosts;
private double futureWaiting;
public UpdateFutureWaitingTimes(StateManager states, VehicleRoutingTransportCosts tpCosts) {
super();
this.states = states;
this.transportCosts = tpCosts;
}
@Override
public void begin(VehicleRoute route) {
this.route = route;
this.futureWaiting = 0.;
}
@Override
public void visit(TourActivity activity) {
states.putInternalTypedActivityState(activity,route.getVehicle(),InternalStates.FUTURE_WAITING,futureWaiting);
futureWaiting += Math.max(activity.getTheoreticalEarliestOperationStartTime() - activity.getArrTime(),0);
}
@Override
public void finish() {}
}

319
jsprit-core/src/test/java/jsprit/core/algorithm/recreate/TestLocalActivityInsertionCostsCalculator.java
View file

@ -16,12 +16,13 @@
******************************************************************************/ ******************************************************************************/
package jsprit.core.algorithm.recreate; package jsprit.core.algorithm.recreate;
import jsprit.core.algorithm.state.StateManager; import jsprit.core.algorithm.state.*;
import jsprit.core.problem.Location; import jsprit.core.problem.Location;
import jsprit.core.problem.VehicleRoutingProblem; import jsprit.core.problem.VehicleRoutingProblem;
import jsprit.core.problem.cost.VehicleRoutingActivityCosts; import jsprit.core.problem.cost.VehicleRoutingActivityCosts;
import jsprit.core.problem.cost.VehicleRoutingTransportCosts; import jsprit.core.problem.cost.VehicleRoutingTransportCosts;
import jsprit.core.problem.cost.WaitingTimeCosts; import jsprit.core.problem.cost.WaitingTimeCosts;
import jsprit.core.problem.job.Job;
import jsprit.core.problem.job.Service; import jsprit.core.problem.job.Service;
import jsprit.core.problem.misc.JobInsertionContext; import jsprit.core.problem.misc.JobInsertionContext;
import jsprit.core.problem.solution.route.VehicleRoute; import jsprit.core.problem.solution.route.VehicleRoute;
@ -33,6 +34,9 @@ import jsprit.core.util.CostFactory;
import org.junit.Before; import org.junit.Before;
import org.junit.Test; import org.junit.Test;
import java.util.ArrayList;
import java.util.Arrays;
import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock; import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when; import static org.mockito.Mockito.when;
@ -156,38 +160,17 @@ public class TestLocalActivityInsertionCostsCalculator {
assertEquals(40.,c,0.01); assertEquals(40.,c,0.01);
} }
// @Test
// public void test_(){
// VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
// VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0, 0)).build();
// Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
// Service newS = Service.Builder.newInstance("new").setLocation(Location.newInstance(40, 0)).build();
// Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(140,150)).build();
// ServiceActivity prevAct = ServiceActivity.newInstance(prevS);
// ServiceActivity newAct = ServiceActivity.newInstance(newS);
// ServiceActivity nextAct = ServiceActivity.newInstance(nextS);
// VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(prevS).addService(nextS).build();
// JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
// LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),new StateManager(mock(VehicleRoutingProblem.class)) );
// calc.setSolutionCompletenessRatio(1.);
//// calc.setVariableStartTimeFactor(1.);
// double c = calc.getCosts(context,prevAct,nextAct,newAct,0);
// assertEquals(0.,c,0.01);
// }
@Test @Test
public void test2(){ public void whenAddingNewBetweenStartAndAct_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build(); VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build(); VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
//
// Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setLocation(Location.newInstance(10, 0)).build(); Service newS = Service.Builder.newInstance("new").setServiceTime(10).setLocation(Location.newInstance(10, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30, 0)) Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30, 0))
.setTimeWindow(TimeWindow.newInstance(40, 50)).build(); .setTimeWindow(TimeWindow.newInstance(40, 50)).build();
Start prevAct = new Start(Location.newInstance(0,0),0,100); Start prevAct = new Start(Location.newInstance(0,0),0,100);
// ServiceActivity prevAct = ServiceActivity.newInstance(prevS);
ServiceActivity newAct = ServiceActivity.newInstance(newS); ServiceActivity newAct = ServiceActivity.newInstance(newS);
ServiceActivity nextAct = ServiceActivity.newInstance(nextS); ServiceActivity nextAct = ServiceActivity.newInstance(nextS);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(nextS).build(); VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(nextS).build();
@ -199,10 +182,9 @@ public class TestLocalActivityInsertionCostsCalculator {
} }
@Test @Test
public void test3(){ public void whenAddingNewBetweenStartAndAct2_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build(); VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
// VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build(); VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setLocation(Location.newInstance(10, 0)).build(); Service newS = Service.Builder.newInstance("new").setServiceTime(10).setLocation(Location.newInstance(10, 0)).build();
@ -221,7 +203,7 @@ public class TestLocalActivityInsertionCostsCalculator {
} }
@Test @Test
public void test4(){ public void whenAddingNewInEmptyRoute_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build(); VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build(); VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
@ -242,5 +224,286 @@ public class TestLocalActivityInsertionCostsCalculator {
double c = calc.getCosts(context,prevAct,nextAct,newAct,0); double c = calc.getCosts(context,prevAct,nextAct,newAct,0);
assertEquals(110.,c,0.01); assertEquals(110.,c,0.01);
} }
@Test
public void whenAddingNewBetweenTwoActs_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10, 0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,50)).build();
ServiceActivity prevAct = ServiceActivity.newInstance(prevS);
ServiceActivity newAct = ServiceActivity.newInstance(newS);
ServiceActivity nextAct = ServiceActivity.newInstance(nextS);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(prevS).addService(nextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),null );
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(-10.,c,0.01);
}
@Test
public void whenAddingNewWithTWBetweenTwoActs_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(100, 120)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,500)).build();
ServiceActivity prevAct = ServiceActivity.newInstance(prevS);
ServiceActivity newAct = ServiceActivity.newInstance(newS);
ServiceActivity nextAct = ServiceActivity.newInstance(nextS);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(prevS).addService(nextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),null );
calc.setSolutionCompletenessRatio(0.5);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(35.,c,0.01);
}
@Test
public void whenAddingNewWithTWBetweenTwoActs2_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(100,120)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,500)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(400,500)).build();
ServiceActivity prevAct = ServiceActivity.newInstance(prevS);
ServiceActivity newAct = ServiceActivity.newInstance(newS);
ServiceActivity nextAct = ServiceActivity.newInstance(nextS);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).addService(prevS).addService(nextS).addService(afterNextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),null );
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(-90.,c,0.01);
//360
//270
}
@Test
public void whenAddingNewWithTWBetweenTwoActs3_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(100,120)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,500)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(80,500)).build();
Service afterAfterNextS = Service.Builder.newInstance("afterAfterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(100,500)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(v).addJob(prevS).addJob(newS).addJob(nextS)
.addJob(afterNextS).addJob(afterAfterNextS).build();
TourActivity prevAct = vrp.getActivities(prevS).get(0);
TourActivity newAct = vrp.getActivities(newS).get(0);
TourActivity nextAct = vrp.getActivities(nextS).get(0);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).setJobActivityFactory(vrp.getJobActivityFactory()).addService(prevS).addService(nextS).addService(afterNextS).addService(afterAfterNextS).build();
StateManager stateManager = getStateManager(vrp,route);
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),stateManager);
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(20.,c,0.01);
//start-delay = new - old = 120 - 40 = 80 > future waiting time savings = 30 + 20 + 10
//ref: 10 + 50 + 20 = 80
//new: 80 - 10 - 30 - 20 = 20
/*
w(new) + w(next) - w_old(next) - min{start_delay(next),future_waiting}
*/
}
@Test
public void whenAddingNewWithTWBetweenTwoActs4_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(false).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(100,120)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,500)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(80,500)).build();
Service afterAfterNextS = Service.Builder.newInstance("afterAfterNext").setLocation(Location.newInstance(50,0)).setTimeWindow(TimeWindow.newInstance(100,500)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(v).addJob(prevS).addJob(newS).addJob(nextS)
.addJob(afterNextS).addJob(afterAfterNextS).build();
TourActivity prevAct = vrp.getActivities(prevS).get(0);
TourActivity newAct = vrp.getActivities(newS).get(0);
TourActivity nextAct = vrp.getActivities(nextS).get(0);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).setJobActivityFactory(vrp.getJobActivityFactory()).addService(prevS).addService(nextS).addService(afterNextS).addService(afterAfterNextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
StateManager stateManager = getStateManager(vrp, route);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),stateManager);
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(30.,c,0.01);
//ref: 10 + 30 + 10 = 50
//new: 50 - 50 = 0
/*
activity start time delay at next act = start-time-old - start-time-new is always bigger than subsequent waiting time savings
*/
/*
old = 10 + 30 + 10 = 50
new = 80 + 0 - 10 - min{80,40} = 30
*/
}
@Test
public void whenAddingNewWithTWBetweenTwoActs4WithVarStart_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(100,120)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,500)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(80,500)).build();
Service afterAfterNextS = Service.Builder.newInstance("afterAfterNext").setLocation(Location.newInstance(50,0)).setTimeWindow(TimeWindow.newInstance(100,500)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(v).addJob(prevS).addJob(newS).addJob(nextS)
.addJob(afterNextS).addJob(afterAfterNextS).build();
TourActivity prevAct = vrp.getActivities(prevS).get(0);
TourActivity newAct = vrp.getActivities(newS).get(0);
TourActivity nextAct = vrp.getActivities(nextS).get(0);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).setJobActivityFactory(vrp.getJobActivityFactory()).addService(prevS).addService(nextS).addService(afterNextS).addService(afterAfterNextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
StateManager stateManager = getStateManager(vrp, route);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),stateManager);
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(0.,c,0.01);
/*
activity start time delay at next act = start-time-old - start-time-new is always bigger than subsequent waiting time savings
*/
/*
old = 10 + 30 + 10 = 50
new = 80 + 0 - 10 - min{80,40} = 30
*/
}
@Test
public void whenAddingNewWithTWBetweenTwoActs3WithVarStart_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(50,70)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,70)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(50,100)).build();
Service afterAfterNextS = Service.Builder.newInstance("afterAfterNext").setLocation(Location.newInstance(50,0)).setTimeWindow(TimeWindow.newInstance(100,500)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(v).addJob(prevS).addJob(newS).addJob(nextS)
.addJob(afterNextS).addJob(afterAfterNextS).build();
TourActivity prevAct = vrp.getActivities(prevS).get(0);
TourActivity newAct = vrp.getActivities(newS).get(0);
TourActivity nextAct = vrp.getActivities(nextS).get(0);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).setJobActivityFactory(vrp.getJobActivityFactory()).addService(prevS).addService(nextS).addService(afterNextS).addService(afterAfterNextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
StateManager stateManager = getStateManager(vrp, route);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),stateManager);
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(-10.,c,0.01);
/*
activity start time delay at next act = start-time-old - start-time-new is always bigger than subsequent waiting time savings
*/
/*
old = s:40,act1:50,act2:60,act3:70,act4:80 --> w=20
new = s:30,act1:40,act2:50,act3:70,act4:80,act5:90 --> w=10 => -10
*/
}
@Test
public void whenAddingNewWithTWBetweenTwoActs2WithVarStart_itShouldCalcInsertionCostsCorrectly(){
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("t").setCostPerWaitingTime(1.).build();
VehicleImpl v = VehicleImpl.Builder.newInstance("v").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
// VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setHasVariableDepartureTime(true).setType(type).setStartLocation(Location.newInstance(0,0)).build();
Service prevS = Service.Builder.newInstance("prev").setLocation(Location.newInstance(10,0)).build();
Service newS = Service.Builder.newInstance("new").setServiceTime(10).setTimeWindow(TimeWindow.newInstance(10,20)).setLocation(Location.newInstance(20, 0)).build();
Service nextS = Service.Builder.newInstance("next").setLocation(Location.newInstance(30,0)).setTimeWindow(TimeWindow.newInstance(40,70)).build();
Service afterNextS = Service.Builder.newInstance("afterNext").setLocation(Location.newInstance(40,0)).setTimeWindow(TimeWindow.newInstance(50,100)).build();
Service afterAfterNextS = Service.Builder.newInstance("afterAfterNext").setLocation(Location.newInstance(50,0)).setTimeWindow(TimeWindow.newInstance(100,500)).build();
VehicleRoutingProblem vrp = VehicleRoutingProblem.Builder.newInstance().addVehicle(v).addJob(prevS).addJob(newS).addJob(nextS)
.addJob(afterNextS).addJob(afterAfterNextS).build();
TourActivity prevAct = vrp.getActivities(prevS).get(0);
TourActivity newAct = vrp.getActivities(newS).get(0);
TourActivity nextAct = vrp.getActivities(nextS).get(0);
VehicleRoute route = VehicleRoute.Builder.newInstance(v).setJobActivityFactory(vrp.getJobActivityFactory()).addService(prevS).addService(nextS).addService(afterNextS).addService(afterAfterNextS).build();
JobInsertionContext context = new JobInsertionContext(route,newS,v,null,0.);
StateManager stateManager = getStateManager(vrp, route);
LocalActivityInsertionCostsCalculator calc = new LocalActivityInsertionCostsCalculator(CostFactory.createEuclideanCosts(),new WaitingTimeCosts(),stateManager);
calc.setSolutionCompletenessRatio(1.);
double c = calc.getCosts(context,prevAct,nextAct,newAct,10);
assertEquals(20.,c,0.01);
/*
activity start time delay at next act = start-time-old - start-time-new is always bigger than subsequent waiting time savings
*/
/*
old = s:40,act1:50,act2:60,act3:70,act4:80 --> w=20
new = s:0,act1:10,act2:20,act3:40,act4:50,act5:60 --> w=40 => 20
*/
}
private StateManager getStateManager(VehicleRoutingProblem vrp, VehicleRoute route) {
StateManager stateManager = new StateManager(vrp);
stateManager.addStateUpdater(new UpdateTimeSlack(stateManager,vrp.getTransportCosts()));
stateManager.addStateUpdater(new UpdateActivityTimes(vrp.getTransportCosts()));
stateManager.addStateUpdater(new UpdateVehicleDependentPracticalTimeWindows(stateManager,vrp.getTransportCosts()));
stateManager.addStateUpdater(new UpdateFutureWaitingTimes(stateManager,vrp.getTransportCosts()));
stateManager.addStateUpdater(new UpdateDepartureTime(vrp.getTransportCosts()));
stateManager.informInsertionStarts(Arrays.asList(route),new ArrayList<Job>());
return stateManager;
}
} }

19
jsprit-examples/src/main/java/jsprit/examples/VariableStartAndWaitingTimeExample.java
View file

@ -35,25 +35,26 @@ public class VariableStartAndWaitingTimeExample {
public static void main(String[] args) { public static void main(String[] args) {
VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerDistance(1.5).setCostPerWaitingTime(1.0).build(); VehicleTypeImpl type = VehicleTypeImpl.Builder.newInstance("type").setCostPerDistance(2.5).setCostPerWaitingTime(2.0).build();
// VehicleTypeImpl type1 = VehicleTypeImpl.Builder.newInstance("type1").setCostPerDistance(1.5).setCostPerWaitingTime(.0).build();
VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setType(type).setReturnToDepot(true) VehicleImpl v2 = VehicleImpl.Builder.newInstance("v2").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build(); .setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build();
VehicleImpl v3 = VehicleImpl.Builder.newInstance("v3").setType(type).setReturnToDepot(true) VehicleImpl v3 = VehicleImpl.Builder.newInstance("v3").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build(); .setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build();
VehicleImpl v4 = VehicleImpl.Builder.newInstance("v4").setType(type).setReturnToDepot(true) VehicleImpl v4 = VehicleImpl.Builder.newInstance("v4").setType(type).setReturnToDepot(true)
.setHasVariableDepartureTime(true).setStartLocation(Location.newInstance(0, 0)).build(); .setHasVariableDepartureTime(false).setStartLocation(Location.newInstance(0, 0)).build();
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance(); VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
Random r = RandomNumberGeneration.newInstance(); Random r = RandomNumberGeneration.newInstance();
for(int i=0;i<20;i++){ for(int i=0;i<40;i++){
Service s = Service.Builder.newInstance("s_"+i) Service s = Service.Builder.newInstance("s_"+i).setServiceTime(0)
// .setTimeWindow(TimeWindow.newInstance(r.nextInt(50),100+r.nextInt(150))) // .setTimeWindow(TimeWindow.newInstance(r.nextInt(50),100+r.nextInt(150)))
.setLocation(Location.newInstance(1 - r.nextInt(5), 10 + r.nextInt(10))).build(); .setLocation(Location.newInstance(1 - r.nextInt(5), 10 + r.nextInt(10))).build();
vrpBuilder.addJob(s); vrpBuilder.addJob(s);
} }
Service s1 = Service.Builder.newInstance("s12").setLocation(Location.newInstance(-3, 15)).setTimeWindow(TimeWindow.newInstance(20, 40)).build(); Service s1 = Service.Builder.newInstance("s12").setLocation(Location.newInstance(-3, 15)).setTimeWindow(TimeWindow.newInstance(20, 60)).build();
// Service s4 = Service.Builder.newInstance("s13").setLocation(Location.newInstance(5,15)).setTimeWindow(TimeWindow.newInstance(100, 160)).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 s2 = Service.Builder.newInstance("s10").setLocation(Location.newInstance(-1, 15)).setTimeWindow(TimeWindow.newInstance(200, 250)).build();
Service s3 = Service.Builder.newInstance("s11").setLocation(Location.newInstance(10, 10)).setTimeWindow(TimeWindow.newInstance(300, 310)).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.addJob(s1).addJob(s2).addJob(s3).addVehicle(v4).addVehicle(v2).addVehicle(v3);
vrpBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE); vrpBuilder.setFleetSize(VehicleRoutingProblem.FleetSize.FINITE);
@ -70,8 +71,8 @@ public class VariableStartAndWaitingTimeExample {
return Jsprit.Builder.newInstance(vrp) return Jsprit.Builder.newInstance(vrp)
.addCoreStateAndConstraintStuff(true) .addCoreStateAndConstraintStuff(true)
.setStateAndConstraintManager(stateManager, constraintManager) .setStateAndConstraintManager(stateManager, constraintManager)
.setProperty(Jsprit.Parameter.THRESHOLD_INI, "0.1") // .setProperty(Jsprit.Parameter.THRESHOLD_INI, "0.1")
.setProperty(Jsprit.Parameter.THRESHOLD_ALPHA, "0.3") // .setProperty(Jsprit.Parameter.THRESHOLD_ALPHA, "0.3")
// .setProperty(Parameter.) // .setProperty(Parameter.)
// .setProperty(Jsprit.Parameter.CONSTRUCTION, Jsprit.Construction.BEST_INSERTION.toString()) // .setProperty(Jsprit.Parameter.CONSTRUCTION, Jsprit.Construction.BEST_INSERTION.toString())
.setObjectiveFunction(new SolutionCostCalculator() { .setObjectiveFunction(new SolutionCostCalculator() {
@ -96,7 +97,7 @@ public class VariableStartAndWaitingTimeExample {
} }
}; };
VehicleRoutingAlgorithm vra = algorithmFactory.createAlgorithm(vrp); VehicleRoutingAlgorithm vra = algorithmFactory.createAlgorithm(vrp);
vra.setMaxIterations(1000); vra.setMaxIterations(500);
vra.addListener(new AlgorithmSearchProgressChartListener("output/search")); vra.addListener(new AlgorithmSearchProgressChartListener("output/search"));
VehicleRoutingProblemSolution solution = Solutions.bestOf(vra.searchSolutions()); VehicleRoutingProblemSolution solution = Solutions.bestOf(vra.searchSolutions());
System.out.println("c: " + solution.getCost()); System.out.println("c: " + solution.getCost());