public PFIH(Depo depo, Vehicle vehicle, List <Customer> customerList, double[][] cTocDistance)
{
this.depo = depo;
this.vehicle = vehicle;
this.customerList = customerList;
this.noOfCustomer = customerList.Count;
this.cTocDistance = cTocDistance;
}
public SimulatedAnnealing(Depo depo, Vehicle vehicle, List <Customer> customerList, double[][] cTocDistance)
{
this.noOfCustomer = customerList.Count;
this.depo = depo;
this.vehicle = vehicle;
this.customerList = customerList; //depo is included as first customer
this.cTocDistance = cTocDistance; //depo is include as First customer
}
public TabuSearch(Depo depo, Vehicle vehicle, List <Customer> customerList, double[][] cTocDistance)
{
this.depo = depo;
this.vehicle = vehicle;
this.customerList = customerList;
this.cTocDistance = cTocDistance;
this.noOfCustomer = customerList.Count;
swapTabuList = new List <SwapTabuMove>();
insertionTabuList = new List <InsertionTabuMove>();
}
//converting depo into customer
public static Customer DepoAsCustomer(Depo depo)
{
Customer customer = new Customer();
customer.id = depo.id;
customer.x_coordinate = depo.x_coordinate;
customer.y_coordinate = depo.y_coorninate;
customer.demand = depo.demand;
customer.timeWindow_start = depo.timeWindow_start;
customer.timeWindow_end = depo.timeWindow_end;
customer.serviceTime = depo.serviceTime;
return(customer);
}
//generating random solution(List<List<Customer>>)
public static List <List <Customer> > GenerateRandomRouteList(Depo depo, Vehicle vehicle, List <Customer> customerList, double[][] cTocDistance)
{
//removing depo
customerList.RemoveAt(0);
List <List <Customer> > routeList = new List <List <Customer> >();
List <Customer> unroutedCustomerList = new List <Customer>();
unroutedCustomerList.AddRange(customerList);
while (unroutedCustomerList.Count > 0)
{
List <Customer> currentRouteCustomerList = new List <Customer>();
//adding depo as first customer
currentRouteCustomerList.Add(DepoAsCustomer(depo));
//adding depo as last customer
currentRouteCustomerList.Add(DepoAsCustomer(depo));
int currentRouteCustomerIndex = 1;
bool feasible = false;
for (int unroutedCustomerIndex = 0; unroutedCustomerIndex < unroutedCustomerList.Count; unroutedCustomerIndex++)
{
Customer unroutedCustomer = unroutedCustomerList[unroutedCustomerIndex];
currentRouteCustomerList.Insert(currentRouteCustomerIndex, unroutedCustomer);
feasible = CheckCapacityConstraint(currentRouteCustomerList, vehicle.capacity) &&
CheckTimeConstraint(currentRouteCustomerList, cTocDistance);
if (feasible)
{
unroutedCustomerList.RemoveAt(unroutedCustomerIndex);
currentRouteCustomerIndex++;
}
else
{
currentRouteCustomerList.RemoveAt(currentRouteCustomerIndex);
}
}
routeList.Add(currentRouteCustomerList);
}
return(routeList);
}
static void Main(string[] args)
{
Depo depo = new Depo();
Vehicle vehicle = new Vehicle();
List <Customer> customerList = new List <Customer>();
vehicle.id = 0;
vehicle.capacity = 200;
bool isDepo = true;
int customerId = 0;
//Getting customer data from data.txt which contains data from soloman's dataset
//URL for soloman's dataset http://web.cba.neu.edu/~msolomon/r101.htm (replace " " with " " in data.txt)
foreach (string line in File.ReadLines(@"/home/rahul/vscode-workspace/VRPTW/data.txt", Encoding.UTF8))
{
line.Trim();
string[] data = line.Split(" ");
if (isDepo)
{
depo.id = customerId++;
depo.x_coordinate = double.Parse(data[2]);
depo.y_coorninate = double.Parse(data[3]);
depo.demand = double.Parse(data[4]);
depo.timeWindow_start = double.Parse(data[5]);;
depo.timeWindow_end = double.Parse(data[6]);
depo.serviceTime = double.Parse(data[7]);
isDepo = false;
}
else
{
Customer customer = new Customer();
customer.id = customerId++;
customer.x_coordinate = double.Parse(data[2]);
customer.y_coordinate = double.Parse(data[3]);
customer.demand = double.Parse(data[4]);
customer.timeWindow_start = double.Parse(data[5]);;
customer.timeWindow_end = double.Parse(data[6]);
customer.serviceTime = double.Parse(data[7]);
customerList.Add(customer);
//Console.WriteLine(customer.x_coordinate+" "+ customer.y_coordinate+" "+ customer.demand+" "+ customer.timeWindow_start+" "+ customer.timeWindow_end);
}
}
//inserting depo as customer at beggining
customerList.Insert(0, Utils.DepoAsCustomer(depo));
//calculating customer to customer distance (0 index represents depo)
int noOfCustomer = customerList.Count;
double[][] cTocDistance = new double[noOfCustomer][];
for (int i = 0; i < noOfCustomer; i++)
{
cTocDistance[i] = new double[noOfCustomer];
for (int j = 0; j < noOfCustomer; j++)
{
cTocDistance[i][j] = Utils.CalculateDistance(customerList[i].x_coordinate,
customerList[i].y_coordinate,
customerList[j].x_coordinate,
customerList[j].y_coordinate);
}
}
//Calling Simulated Annealing
SimulatedAnnealing simulatedAnnealing = new SimulatedAnnealing(depo, vehicle, customerList, cTocDistance);
simulatedAnnealing.run(100, 1, 0.98, 6000);
//Calling Tabu Search
// TabuSearch tabuSearch = new TabuSearch(depo, vehicle, customerList, cTocDistance);
// tabuSearch.run();
}