public AlgorithmsTestViewModel Main()
{
FindRouteBusinessLayer findRouteBL = new FindRouteBusinessLayer();
AlgorithmsTestViewModel algorithmsTestVM = new AlgorithmsTestViewModel();
Route fullGAPathNodeList = new Route();
Route fullCWPathNodeList = new Route();
GAResults();
SumGACosts();
BestGASolution();
ClarkeWrightResult();
InsertResultsToExcelFile();
algorithmsTestVM.GAPath = findRouteBL.ConvertSolution(bestGASolution.Last().NodeIndexList, vrpGraph);
algorithmsTestVM.GAPath.Add(algorithmsTestVM.GAPath[0]);
fullGAPathNodeList = findRouteBL.CreateFullRoute(algorithmsTestVM.GAPath, pathMemoryList);
algorithmsTestVM.GAPath = fullGAPathNodeList.Path;
algorithmsTestVM.GAPathCost = bestGASolution.Last().FitnessValue;
algorithmsTestVM.GAPathCost = Math.Round(algorithmsTestVM.GAPathCost, 3);
algorithmsTestVM.ClarkeWrightPath = findRouteBL.ConvertSolution(cwResultNodeIndexList, vrpGraph);
fullCWPathNodeList = findRouteBL.CreateFullRoute(algorithmsTestVM.ClarkeWrightPath, pathMemoryList);
algorithmsTestVM.ClarkeWrightPath = fullCWPathNodeList.Path;
algorithmsTestVM.ClarkeWrightPathCost = fullCWPathNodeList.Cost;
algorithmsTestVM.ClarkeWrightPathCost = Math.Round(algorithmsTestVM.ClarkeWrightPathCost, 3);
algorithmsTestVM.GAExecutionTime = gaExecutionTime;
algorithmsTestVM.ClarkeWrightExecutionTime = cwExecutionTime;
return(algorithmsTestVM);
}
private void BestGASolution()
{
List <List <Chromosome> > allSolutionsList = new List <List <Chromosome> >();
FindRouteBusinessLayer findRouteBL = new FindRouteBusinessLayer();
for (int i = 0; i < gaResultsList.Count(); i++)
{
for (int j = 0; j < gaResultsList[i].Count(); j++)
{
allSolutionsList.Add(gaResultsList[i][j]);
}
}
List <Chromosome> best = allSolutionsList[0];
int bestIndex = 0;
for (int i = 1; i < allSolutionsList.Count(); i++)
{
if (best.Last().FitnessValue > allSolutionsList[i].Last().FitnessValue)
{
best = allSolutionsList[i];
bestIndex = i;
}
}
gaExecutionTime = gaExecutionTimeList[bestIndex];
bestGASolution = best;
}
public void Evaluation(List <Chromosome> population)
{
FindRouteBusinessLayer findRouteBL = new FindRouteBusinessLayer();
for (int i = 0; i < population.Count(); i++)
{
population[i].FitnessValue = 0;
for (int j = 0; j < population[i].NodeIndexList.Count() - 1; j++)
{
population[i].FitnessValue += Graph.Edges[population[i].NodeIndexList[j]]
.Where(x => x.Item1 == population[i].NodeIndexList[j + 1]).First().Item2;
}
population[i].FitnessValue += Graph.Edges[population[i].NodeIndexList.Last()]
.Where(x => x.Item1 == population[i].NodeIndexList[0]).First().Item2;
}
}
public void ConnectAddressesToGraph(List <Node> addressList)
{
for (int i = 0; i < addressList.Count(); i++)
{
//item1: wierzchołek, item2: odległośc do tego wierzchołka
List <Tuple <Node, double> > nodeBelongToStreetList = new List <Tuple <Node, double> >();
string streetName = addressList[i].dict["addr:street"];
for (int j = 0; j < NodeList.Count(); j++)
{
if (NodeList[j].dict.ContainsKey("addr:street") && NodeList[j].dict["addr:street"].Equals(streetName))
{
double distance = FindRouteBusinessLayer.CalculateDistance(addressList[i], NodeList[j]);
nodeBelongToStreetList.Add(new Tuple <Node, double>(NodeList[j], distance));
}
}
nodeBelongToStreetList = nodeBelongToStreetList.OrderBy(x => x.Item2).ToList();
if (nodeBelongToStreetList.Count > 0)
{
//add node
addressList[i].ArrayIndex = Edges.Length;
NodeList.Add(addressList[i]);
//add edges
int newArraySize = Edges.Length + 1;
List <Tuple <int, double> >[] tmpEdges = Edges;
Array.Resize <List <Tuple <int, double> > >(ref tmpEdges, newArraySize);
Edges = new List <Tuple <int, double> > [newArraySize];
Edges = tmpEdges;
Edges[newArraySize - 1] = new List <Tuple <int, double> >();
Edges[newArraySize - 1].Add(new Tuple <int, double>(nodeBelongToStreetList[0].Item1.ArrayIndex, nodeBelongToStreetList[0].Item2));
Edges[nodeBelongToStreetList[0].Item1.ArrayIndex].Add(new Tuple <int, double>(addressList[i].ArrayIndex, nodeBelongToStreetList[0].Item2));
}
}
}
public List <Node> AStar(List <Tuple <int, double> >[] adjacencList, List <Node> nodeList, Node source, Node destination, double speed)
{
FindRouteBusinessLayer findRouteBL = new FindRouteBusinessLayer();
List <int> closetSet = new List <int>();
List <int> openSet = new List <int>();
int nodesNumber = adjacencList.Length;
double[] gScore = new double[nodesNumber];
double[] fScore = new double[nodesNumber];
int[] cameFrom = new int[nodesNumber];
for (int i = 0; i < nodesNumber; i++)
{
gScore[i] = double.MaxValue;
fScore[i] = double.MaxValue;
}
gScore[source.ArrayIndex] = 0;
//fScore[source.ArrayIndex] = findRouteBL.GetEstimateRouteCost(source, destination) * speed;
fScore[source.ArrayIndex] = GetDistanceInKM(source, destination) * speed;
for (int i = 0; i < adjacencList.Length; i++)
{
openSet.Add(i);
}
while (openSet.Count() != 0)
{
int current = FindNodeWithLowestCost(fScore, openSet);
if (current == destination.ArrayIndex)
{
int[] path = ReconstructPath(cameFrom, source.ArrayIndex, destination.ArrayIndex);
List <Node> result = new List <Node>();
foreach (var index in path)
{
result.Add(nodeList[index]);
}
return(result);
}
openSet.RemoveAt(openSet.FindIndex(x => x == current));
closetSet.Add(current);
for (int i = 0; i < adjacencList[current].Count(); i++)
{
if (closetSet.Contains(adjacencList[current][i].Item1))
{
continue;
}
double tentative_gScore = gScore[current] + adjacencList[current][i].Item2;
if (openSet.Contains(adjacencList[current][i].Item1) == false)
{
openSet.Add(adjacencList[current][i].Item1);
}
if (tentative_gScore >= gScore[adjacencList[current][i].Item1])
{
continue;
}
cameFrom[adjacencList[current][i].Item1] = current;
gScore[adjacencList[current][i].Item1] = tentative_gScore;
//fScore[adjacencList[current][i].Item1] = gScore[adjacencList[current][i].Item1]
// + findRouteBL.GetEstimateRouteCost(nodeList.Where(x => x.ArrayIndex == adjacencList[current][i].Item1).First(), destination) * speed;
fScore[adjacencList[current][i].Item1] = gScore[adjacencList[current][i].Item1]
+ GetDistanceInKM(nodeList.Where(x => x.ArrayIndex == adjacencList[current][i].Item1).First(), destination) * speed;
}
}
return(null);
}
