public override T LoadData(IDataDescriptor id)
{
var descriptor = (TSPLIBDataDescriptor)id;
var instanceArchiveName = GetResourceName(FileExtension + @"\.zip");
using (var instancesZipFile = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) {
var entry = instancesZipFile.GetEntry(descriptor.InstanceIdentifier);
var stream = entry.Open();
var parser = new TSPLIBParser(stream);
var instance = LoadInstance(parser, id);
LoadQuality(descriptor.BestQuality, instance);
if (!String.IsNullOrEmpty(descriptor.SolutionIdentifier))
{
var solutionsArchiveName = GetResourceName(FileExtension + @"\.opt\.tour\.zip");
using (var solutionsZipFile = new ZipArchive(GetType().Assembly.GetManifestResourceStream(solutionsArchiveName), ZipArchiveMode.Read)) {
entry = solutionsZipFile.GetEntry(descriptor.SolutionIdentifier);
stream = entry.Open();
parser = new TSPLIBParser(stream);
LoadSolution(parser, instance);
}
}
return(instance);
}
}
protected override PTSPData LoadInstance(TSPLIBParser parser, IDataDescriptor descriptor = null)
{
parser.Parse();
if (parser.FixedEdges != null)
{
throw new InvalidDataException("TSP instance " + parser.Name + " contains fixed edges which are not supported by HeuristicLab.");
}
var instance = new PTSPData();
instance.Dimension = parser.Dimension;
instance.Coordinates = parser.Vertices != null ? parser.Vertices : parser.DisplayVertices;
instance.Distances = parser.Distances;
switch (parser.EdgeWeightType)
{
case TSPLIBEdgeWeightTypes.ATT:
instance.DistanceMeasure = DistanceMeasure.Att; break;
case TSPLIBEdgeWeightTypes.CEIL_2D:
instance.DistanceMeasure = DistanceMeasure.UpperEuclidean; break;
case TSPLIBEdgeWeightTypes.EUC_2D:
instance.DistanceMeasure = DistanceMeasure.RoundedEuclidean; break;
case TSPLIBEdgeWeightTypes.EUC_3D:
throw new InvalidDataException("3D coordinates are not supported.");
case TSPLIBEdgeWeightTypes.EXPLICIT:
instance.DistanceMeasure = DistanceMeasure.Direct; break;
case TSPLIBEdgeWeightTypes.GEO:
instance.DistanceMeasure = DistanceMeasure.Geo; break;
case TSPLIBEdgeWeightTypes.MAN_2D:
instance.DistanceMeasure = DistanceMeasure.Manhattan; break;
case TSPLIBEdgeWeightTypes.MAN_3D:
throw new InvalidDataException("3D coordinates are not supported.");
case TSPLIBEdgeWeightTypes.MAX_2D:
instance.DistanceMeasure = DistanceMeasure.Maximum; break;
case TSPLIBEdgeWeightTypes.MAX_3D:
throw new InvalidDataException("3D coordinates are not supported.");
default:
throw new InvalidDataException("The given edge weight is not supported by HeuristicLab.");
}
instance.Name = parser.Name;
instance.Description = parser.Comment
+ Environment.NewLine + Environment.NewLine
+ GetInstanceDescription();
instance.Probabilities = GetProbabilities(descriptor, instance);
return(instance);
}
public TSPData LoadData(string tspFile, string tourFile, double?bestQuality)
{
var data = LoadInstance(new TSPLIBParser(tspFile));
if (!String.IsNullOrEmpty(tourFile))
{
var tourParser = new TSPLIBParser(tourFile);
LoadSolution(tourParser, data);
}
if (bestQuality.HasValue)
{
data.BestKnownQuality = bestQuality.Value;
}
return(data);
}
protected override ATSPData LoadInstance(TSPLIBParser parser)
{
var instance = new ATSPData();
parser.Parse();
instance.Dimension = parser.Dimension;
instance.Coordinates = parser.DisplayVertices != null ? parser.DisplayVertices : parser.Vertices;
instance.Distances = parser.Distances;
instance.Name = parser.Name;
instance.Description = parser.Comment
+ Environment.NewLine + Environment.NewLine
+ GetInstanceDescription();
return(instance);
}
protected override CVRPData LoadInstance(TSPLIBParser parser, IDataDescriptor descriptor = null)
{
parser.Parse();
var instance = new CVRPData();
instance.Dimension = parser.Dimension;
instance.Coordinates = parser.Vertices != null ? parser.Vertices : parser.DisplayVertices;
instance.Distances = parser.Distances;
instance.Capacity = parser.Capacity.Value;
instance.Demands = parser.Demands;
switch (parser.EdgeWeightType)
{
case TSPLIBEdgeWeightTypes.ATT:
instance.DistanceMeasure = DistanceMeasure.Att; break;
case TSPLIBEdgeWeightTypes.CEIL_2D:
instance.DistanceMeasure = DistanceMeasure.UpperEuclidean; break;
case TSPLIBEdgeWeightTypes.EUC_2D:
case TSPLIBEdgeWeightTypes.EUC_3D:
instance.DistanceMeasure = DistanceMeasure.RoundedEuclidean; break;
case TSPLIBEdgeWeightTypes.EXPLICIT:
instance.DistanceMeasure = DistanceMeasure.Direct; break;
case TSPLIBEdgeWeightTypes.GEO:
instance.DistanceMeasure = DistanceMeasure.Geo; break;
case TSPLIBEdgeWeightTypes.MAN_2D:
case TSPLIBEdgeWeightTypes.MAN_3D:
instance.DistanceMeasure = DistanceMeasure.Manhattan; break;
case TSPLIBEdgeWeightTypes.MAX_2D:
case TSPLIBEdgeWeightTypes.MAX_3D:
instance.DistanceMeasure = DistanceMeasure.Maximum; break;
default:
throw new InvalidDataException("The given edge weight is not supported by HeuristicLab.");
}
instance.Name = parser.Name;
instance.Description = parser.Comment
+ Environment.NewLine + Environment.NewLine
+ GetInstanceDescription();
return(instance);
}
protected override void LoadSolution(TSPLIBParser parser, TSPData instance)
{
parser.Parse();
instance.BestKnownTour = parser.Tour.FirstOrDefault();
}
protected override void LoadSolution(TSPLIBParser parser, CVRPData instance)
{
parser.Parse();
instance.BestKnownTour = parser.Tour;
}
protected abstract void LoadSolution(TSPLIBParser parser, T instance);
protected abstract T LoadInstance(TSPLIBParser parser, IDataDescriptor descriptor = null);
protected abstract T LoadInstance(TSPLIBParser parser);
