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Code Issues Releases Wiki Activity

enable search with different insertion strategies

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This commit is contained in:
oblonski 2014-12-10 13:12:15 +01:00
parent c472042781
commit 7ce6a8d68a
6 changed files with 233 additions and 31 deletions
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62
jsprit-core/src/main/java/jsprit/core/algorithm/io/VehicleRoutingAlgorithms.java
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@ -494,7 +494,7 @@ public class VehicleRoutingAlgorithms {
}
private static VehicleRoutingAlgorithm readAndCreateAlgorithm(final VehicleRoutingProblem vrp, XMLConfiguration config,
int nuOfThreads, SolutionCostCalculator solutionCostCalculator, final StateManager stateManager, ConstraintManager constraintManager, boolean addDefaultCostCalculators) {
int nuOfThreads, final SolutionCostCalculator solutionCostCalculator, final StateManager stateManager, ConstraintManager constraintManager, boolean addDefaultCostCalculators) {
// map to store constructed modules
TypedMap definedClasses = new TypedMap();
@ -572,13 +572,22 @@ public class VehicleRoutingAlgorithms {
stateManager.addStateUpdater(new UpdateActivityTimes(vrp.getTransportCosts(),activityPolicy));
stateManager.addStateUpdater(new UpdateVariableCosts(vrp.getActivityCosts(), vrp.getTransportCosts(), stateManager, activityPolicy));
SolutionCostCalculator costCalculator;
final SolutionCostCalculator costCalculator;
if(solutionCostCalculator==null) costCalculator = getDefaultCostCalculator(stateManager);
else costCalculator = solutionCostCalculator;
//construct initial solution creator
AlgorithmStartsListener createInitialSolution = createInitialSolution(config,vrp,vehicleFleetManager,stateManager,algorithmListeners,definedClasses,executorService,nuOfThreads,costCalculator, constraintManager, addDefaultCostCalculators);
if(createInitialSolution != null) algorithmListeners.add(new PrioritizedVRAListener(Priority.MEDIUM, createInitialSolution));
final InsertionStrategy initialInsertionStrategy = createInitialSolution(config,vrp,vehicleFleetManager,stateManager,algorithmListeners,definedClasses,executorService,nuOfThreads,costCalculator, constraintManager, addDefaultCostCalculators);
if(initialInsertionStrategy != null) algorithmListeners.add(new PrioritizedVRAListener(Priority.MEDIUM, new AlgorithmStartsListener() {
@Override
public void informAlgorithmStarts(VehicleRoutingProblem problem, VehicleRoutingAlgorithm algorithm, Collection<VehicleRoutingProblemSolution> solutions) {
InsertionInitialSolutionFactory insertionInitialSolutionFactory = new InsertionInitialSolutionFactory(initialInsertionStrategy, costCalculator);
VehicleRoutingProblemSolution vrpSol = insertionInitialSolutionFactory.createSolution(vrp);
solutions.add(vrpSol);
}
}));
//construct algorithm, i.e. search-strategies and its modules
int solutionMemory = config.getInt("strategy.memory");
@ -605,13 +614,6 @@ public class VehicleRoutingAlgorithms {
if(maxIterationsString == null) maxIterationsString = config.getString("maxIterations");
if(maxIterationsString != null) metaAlgorithm.setMaxIterations(Integer.parseInt(maxIterationsString));
metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(stateManager);
metaAlgorithm.getAlgorithmListeners().addListener(stateManager);
metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new RemoveEmptyVehicles(vehicleFleetManager));
metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new ResetAndIniFleetManager(vehicleFleetManager));
metaAlgorithm.getSearchStrategyManager().addSearchStrategyModuleListener(new VehicleSwitched(vehicleFleetManager));
//define prematureBreak
PrematureAlgorithmTermination prematureAlgorithmTermination = getPrematureTermination(config, algorithmListeners);
if(prematureAlgorithmTermination != null) metaAlgorithm.setPrematureAlgorithmTermination(prematureAlgorithmTermination);
@ -623,12 +625,26 @@ public class VehicleRoutingAlgorithms {
}
}
//misc
// algorithmListeners.add(new PrioritizedVRAListener(Priority.LOW, new SolutionVerifier()));
//register listeners
registerListeners(metaAlgorithm,algorithmListeners);
RemoveEmptyVehicles removeEmptyVehicles = new RemoveEmptyVehicles(vehicleFleetManager);
ResetAndIniFleetManager resetAndIniFleetManager = new ResetAndIniFleetManager(vehicleFleetManager);
VehicleSwitched vehicleSwitched = new VehicleSwitched(vehicleFleetManager);
metaAlgorithm.addListener(stateManager);
metaAlgorithm.addListener(removeEmptyVehicles);
metaAlgorithm.addListener(resetAndIniFleetManager);
metaAlgorithm.addListener(vehicleSwitched);
if(initialInsertionStrategy != null) {
if(initialInsertionStrategy.getListeners() != null){
if(!initialInsertionStrategy.getListeners().contains(stateManager)) initialInsertionStrategy.addListener(stateManager);
if(!initialInsertionStrategy.getListeners().contains(removeEmptyVehicles)) initialInsertionStrategy.addListener(removeEmptyVehicles);
if(!initialInsertionStrategy.getListeners().contains(resetAndIniFleetManager)) initialInsertionStrategy.addListener(resetAndIniFleetManager);
if(!initialInsertionStrategy.getListeners().contains(vehicleSwitched)) initialInsertionStrategy.addListener(vehicleSwitched);
}
}
//register listeners
registerListeners(metaAlgorithm, algorithmListeners);
registerInsertionListeners(definedClasses,insertionListeners);
return metaAlgorithm;
}
@ -747,7 +763,7 @@ public class VehicleRoutingAlgorithms {
metaAlgorithm.getAlgorithmListeners().addAll(algorithmListeners);
}
private static AlgorithmStartsListener createInitialSolution(XMLConfiguration config, final VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, final StateManager routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, final SolutionCostCalculator solutionCostCalculator, ConstraintManager constraintManager, boolean addDefaultCostCalculators) {
private static InsertionStrategy createInitialSolution(XMLConfiguration config, final VehicleRoutingProblem vrp, VehicleFleetManager vehicleFleetManager, final StateManager routeStates, Set<PrioritizedVRAListener> algorithmListeners, TypedMap definedClasses, ExecutorService executorService, int nuOfThreads, final SolutionCostCalculator solutionCostCalculator, ConstraintManager constraintManager, boolean addDefaultCostCalculators) {
List<HierarchicalConfiguration> modConfigs = config.configurationsAt("construction.insertion");
if(modConfigs == null) return null;
if(modConfigs.isEmpty()) return null;
@ -768,15 +784,7 @@ public class VehicleRoutingAlgorithms {
}
final InsertionStrategy finalInsertionStrategy = insertionStrategy;
return new AlgorithmStartsListener() {
@Override
public void informAlgorithmStarts(VehicleRoutingProblem problem, VehicleRoutingAlgorithm algorithm, Collection<VehicleRoutingProblemSolution> solutions) {
InsertionInitialSolutionFactory insertionInitialSolutionFactory = new InsertionInitialSolutionFactory(finalInsertionStrategy, solutionCostCalculator);
VehicleRoutingProblemSolution vrpSol = insertionInitialSolutionFactory.createSolution(vrp);
solutions.add(vrpSol);
}
};
return finalInsertionStrategy;
}