public void FindSolutionStartTest1()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.FindSolutionStart("sol:", data);
Assert.AreEqual(KnapsackProblemDataParser.ReadSolutionResourceOrFindSolutionEnd, constraint);
}
public void ReadSolutionResourceOrFindSolutionEndTest2()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.ReadSolutionResourceOrFindSolutionEnd("", data);
Assert.IsNull(constraint);
}
public void ReadResourceOrFindDataEndTest1()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.ReadResourceOrFindDataEnd("end data", data);
Assert.AreEqual(KnapsackProblemDataParser.FindSolutionStart, constraint);
}
public void FindSolutionStartTest2()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.FindSolutionStart("3369\t3712", data);
Assert.AreEqual(KnapsackProblemDataParser.FindSolutionStart, constraint);
}
public void FindDataStartTest1()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.FindDataStart("begin data", data);
Assert.AreEqual(KnapsackProblemDataParser.ReadResourceOrFindDataEnd, constraint);
}
public void FindDataStartTest2()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.FindDataStart("Something else", data);
Assert.AreEqual(KnapsackProblemDataParser.FindDataStart, constraint);
}
public void FindConstraintTest1()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.FindConstraint("c: 123", data);
Assert.AreEqual(KnapsackProblemDataParser.FindDataStart, constraint);
Assert.AreEqual(123, data.MaxWeight);
}
public static FindMethod FindSolutionStart(string line, KnapsackProblemDataParser data)
{
if (line == "sol:")
{
return(ReadSolutionResourceOrFindSolutionEnd);
}
return(FindSolutionStart);
}
public static FindMethod FindDataStart(string line, KnapsackProblemDataParser data)
{
if (line != "begin data")
{
return(FindDataStart);
}
return(ReadResourceOrFindDataEnd);
}
public void Exnsd16Test()
{
var problemInfo = KnapsackProblemDataParser.LoadData(@"..\..\Data\exnsd16.ukp");
var items = problemInfo.Resources;
var maxWeight = problemInfo.MaxWeight;
var maxVolume = 0.0;
var optimal = GetFitness(problemInfo.Solution);
FillKnapsack(items, maxWeight, maxVolume, optimal);
}
public void ReadResourceOrFindDataEndTest2()
{
var data = new KnapsackProblemDataParser();
var constraint = KnapsackProblemDataParser.ReadResourceOrFindDataEnd("3369\t3712", data);
Assert.AreEqual(KnapsackProblemDataParser.ReadResourceOrFindDataEnd, constraint);
Assert.AreEqual("R1", data.Resources[0].Name);
Assert.AreEqual(3712, data.Resources[0].Value);
Assert.AreEqual(0, data.Resources[0].Volume);
Assert.AreEqual(3369, data.Resources[0].Weight);
}
public static FindMethod ReadResourceOrFindDataEnd(string line, KnapsackProblemDataParser data)
{
if (line == "end data")
{
return(FindSolutionStart);
}
var parts = line.Split('\t');
var resouce = new Resource("R" + (data.Resources.Count + 1), int.Parse(parts[1]), int.Parse(parts[0]), 0);
data.Resources.Add(resouce);
return(ReadResourceOrFindDataEnd);
}
public static FindMethod FindConstraint(string line, KnapsackProblemDataParser data)
{
var parts = line.Split(' ');
if (parts[0] != "c:")
{
return(FindConstraint);
}
data.MaxWeight = int.Parse(parts[1]);
return(FindDataStart);
}
public void ReadSolutionResourceOrFindSolutionEndTest1()
{
var data = new KnapsackProblemDataParser();
var resource = new Resource("R1", 5687, 6585, 0);
data.Resources.Add(resource);
var constraint =
KnapsackProblemDataParser.ReadSolutionResourceOrFindSolutionEnd("\t1\t156\t5687\t6585", data);
Assert.AreEqual(KnapsackProblemDataParser.ReadSolutionResourceOrFindSolutionEnd, constraint);
Assert.AreSame(resource, data.Solution[0].Item);
Assert.AreEqual(156, data.Solution[0].Quantity);
}
public static FindMethod ReadSolutionResourceOrFindSolutionEnd(string line, KnapsackProblemDataParser data)
{
if (string.IsNullOrWhiteSpace(line))
{
return(null);
}
var parts = line.Split('\t').Where(s => !string.IsNullOrWhiteSpace(s)).Select(p => p).ToArray();
var resourceIndex = int.Parse(parts[0]) - 1;
var resourceQuantity = int.Parse(parts[1]);
var item = new ItemQuantity(data.Resources[resourceIndex], resourceQuantity);
data.Solution.Add(item);
return(ReadSolutionResourceOrFindSolutionEnd);
}
public static KnapsackProblemData LoadData(string filename)
{
var lines = File.ReadAllLines(filename);
var data = new KnapsackProblemDataParser();
FindMethod f = FindConstraint;
foreach (var line in lines)
{
f = f(line.Trim(), data);
if (f == null)
{
break;
}
}
return(new KnapsackProblemData(data.Resources.ToArray(), data.MaxWeight, data.Solution.ToArray()));
}
public void LoadDataTest()
{
var problemInfo = KnapsackProblemDataParser.LoadData(@"..\..\Data\exnsd16.ukp");
Assert.AreEqual(889304, problemInfo.MaxWeight);
Assert.AreEqual(2000, problemInfo.Resources.Length);
Assert.AreEqual(2, problemInfo.Solution.Length);
// nb idx w p
// 156 x R288, 5687, 0, 6585
// 1 x R987, 2131, 0, 2420
var iq1 = new ItemQuantity(problemInfo.Resources[288 - 1], 156);
var iq2 = new ItemQuantity(problemInfo.Resources[987 - 1], 1);
CollectionAssert.AreEquivalent(new[] { iq1, iq2 }, problemInfo.Solution);
}
