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oblonski 2015-12-11 17:40:41 +01:00
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jsprit-examples/src/main/java/jsprit/examples/RefuseCollectionWithFastMatrixExample.java
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@ -11,7 +11,7 @@
* 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
* 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.examples;
@ -42,103 +42,102 @@ import java.util.Collection;
/**
* This example is base on
* http://web.mit.edu/urban_or_book/www/book/chapter6/6.4.12.html
*
* @author stefan schroeder
*
* @author stefan schroeder
*/
public class RefuseCollectionWithFastMatrixExample {
public static void main(String[] args) throws IOException {
/*
* some preparation - create output folder
public static void main(String[] args) throws IOException {
/*
* some preparation - create output folder
*/
Examples.createOutputFolder();
Examples.createOutputFolder();
/*
* create vehicle-type and vehicle
* create vehicle-type and vehicle
*/
VehicleTypeImpl.Builder typeBuilder = VehicleTypeImpl.Builder.newInstance("vehicle-type").addCapacityDimension(0, 23);
typeBuilder.setCostPerDistance(1.0);
VehicleTypeImpl bigType = typeBuilder.build();
VehicleTypeImpl.Builder typeBuilder = VehicleTypeImpl.Builder.newInstance("vehicle-type").addCapacityDimension(0, 23);
typeBuilder.setCostPerDistance(1.0);
VehicleTypeImpl bigType = typeBuilder.build();
VehicleImpl.Builder vehicleBuilder = VehicleImpl.Builder.newInstance("vehicle");
vehicleBuilder.setStartLocation(Location.Builder.newInstance().setIndex(1).build());
vehicleBuilder.setType(bigType);
VehicleImpl bigVehicle = vehicleBuilder.build();
VehicleImpl.Builder vehicleBuilder = VehicleImpl.Builder.newInstance("vehicle");
vehicleBuilder.setStartLocation(Location.Builder.newInstance().setIndex(1).build());
vehicleBuilder.setType(bigType);
VehicleImpl bigVehicle = vehicleBuilder.build();
/*
* start building the problem
* start building the problem
*/
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.setFleetSize(FleetSize.INFINITE);
vrpBuilder.addVehicle(bigVehicle);
VehicleRoutingProblem.Builder vrpBuilder = VehicleRoutingProblem.Builder.newInstance();
vrpBuilder.setFleetSize(FleetSize.INFINITE);
vrpBuilder.addVehicle(bigVehicle);
/*
* read demand quantities
* read demand quantities
*/
readDemandQuantities(vrpBuilder);
readDemandQuantities(vrpBuilder);
/*
* create cost-matrix
* create cost-matrix
*/
FastVehicleRoutingTransportCostsMatrix.Builder matrixBuilder = FastVehicleRoutingTransportCostsMatrix.Builder.newInstance(11,true);
readDistances(matrixBuilder);
FastVehicleRoutingTransportCostsMatrix.Builder matrixBuilder = FastVehicleRoutingTransportCostsMatrix.Builder.newInstance(11, true);
readDistances(matrixBuilder);
vrpBuilder.setRoutingCost(matrixBuilder.build());
VehicleRoutingProblem vrp = vrpBuilder.build();
VehicleRoutingAlgorithm vra = new GreedySchrimpfFactory().createAlgorithm(vrp);
vra.setPrematureAlgorithmTermination(new IterationWithoutImprovementTermination(100));
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
SolutionPrinter.print(Solutions.bestOf(solutions));
new VrpXMLWriter(vrp, solutions).write("output/refuseCollectionExampleSolution.xml");
}
vrpBuilder.setRoutingCost(matrixBuilder.build());
VehicleRoutingProblem vrp = vrpBuilder.build();
VehicleRoutingAlgorithm vra = new GreedySchrimpfFactory().createAlgorithm(vrp);
vra.setPrematureAlgorithmTermination(new IterationWithoutImprovementTermination(100));
Collection<VehicleRoutingProblemSolution> solutions = vra.searchSolutions();
SolutionPrinter.print(Solutions.bestOf(solutions));
new VrpXMLWriter(vrp, solutions).write("output/refuseCollectionExampleSolution.xml");
}
private static void readDemandQuantities(VehicleRoutingProblem.Builder vrpBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/RefuseCollectionExample_Quantities")));
String line;
boolean firstLine = true;
while((line = reader.readLine()) != null){
if(firstLine) {
firstLine = false;
continue;
}
String[] lineTokens = line.split(",");
/*
* build service
private static void readDemandQuantities(VehicleRoutingProblem.Builder vrpBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/RefuseCollectionExample_Quantities")));
String line;
boolean firstLine = true;
while ((line = reader.readLine()) != null) {
if (firstLine) {
firstLine = false;
continue;
}
String[] lineTokens = line.split(",");
/*
* build service
*/
Service service = Service.Builder.newInstance(lineTokens[0])
.addSizeDimension(0, Integer.parseInt(lineTokens[1]))
.setLocation(Location.Builder.newInstance().setIndex(Integer.parseInt(lineTokens[0])).build())
.build();
/*
Service service = Service.Builder.newInstance(lineTokens[0])
.addSizeDimension(0, Integer.parseInt(lineTokens[1]))
.setLocation(Location.Builder.newInstance().setIndex(Integer.parseInt(lineTokens[0])).build())
.build();
/*
* and add it to problem
*/
vrpBuilder.addJob(service);
}
reader.close();
}
vrpBuilder.addJob(service);
}
reader.close();
}
private static void readDistances(FastVehicleRoutingTransportCostsMatrix.Builder matrixBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/RefuseCollectionExample_Distances")));
String line;
boolean firstLine = true;
while((line = reader.readLine()) != null){
if(firstLine) {
firstLine = false;
continue;
}
String[] lineTokens = line.split(",");
matrixBuilder.addTransportDistance(Integer.parseInt(lineTokens[0]),Integer.parseInt(lineTokens[1]), Integer.parseInt(lineTokens[2]));
}
reader.close();
}
private static void readDistances(FastVehicleRoutingTransportCostsMatrix.Builder matrixBuilder) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(new File("input/RefuseCollectionExample_Distances")));
String line;
boolean firstLine = true;
while ((line = reader.readLine()) != null) {
if (firstLine) {
firstLine = false;
continue;
}
String[] lineTokens = line.split(",");
matrixBuilder.addTransportDistance(Integer.parseInt(lineTokens[0]), Integer.parseInt(lineTokens[1]), Integer.parseInt(lineTokens[2]));
}
reader.close();
}
}