/// <summary>
/// Creates the fitness. Must be overriden
/// </summary>
/// <returns>
/// The fitness
/// </returns>
public virtual IFitness CreateFitness()
{
AFitness f = new AFitness();
f.FitnessFuncToPass = c =>
{
GADataSet.SolutionsDataTable sols = new GADataSet.SolutionsDataTable();
GADataSet.SolutionsRow currentSolution = sols.NewSolutionsRow();
// GADataSet.SolutionsDataTable sols = new GADataSet.SolutionsDataTable();
// GADataSet.SolutionsRow currentSolution = sols.NewSolutionsRow();
currentSolution.Initialize(c.GetGenes());
currentSolution.ProblemID = PROBLEMID;
// initializeRows(ref currentSolution, ref c);
FillBasic(ref currentSolution);
double fit = currentSolution.Fitness; //STORE THE VALUE OF FITNESS
sols.Dispose();
return(fit);
};
return(f);
}
/// <summary>
/// BASIC CALCULATION NECESSARY FOR FITNESS
/// </summary>
/// <param name="r"></param>
/// <param name="c"></param>
public override void FillBasic(ref GADataSet.SolutionsRow r)
{
GADataSet.DataRow d = r.DataAxuliar.NewDataRow();
r.DataAxuliar.AddDataRow(d);
//auxiliar data row
for (int i = 0; i < VariableNames.Length; i++)
{
//Field A, B or C
double dummy = Aid.SetBasic(r.GenesAsInts, ProblemData, VariableNames[i]);
d.SetField(VariableNames[i], dummy); //first
//save total in a dataauxiliar Row
}
DataRow row = d;
object[] results = findFines(ref row);
r.Okays = results[0] as string;
double fine = Convert.ToDouble(results[1]);
r.Okays += " " + Decimal.Round(Convert.ToDecimal(fine), 3);
r.Fitness = d.C;
r.Fitness /= (1 + fine); //max vol, max value * (1+fine)
r.Genotype = Aid.SetStrings(r.GenesAsInts);
}
private void fillStrings()
{
GADataSet ds = GARow.Table.DataSet as GADataSet;
for (int i = 0; i < listOfSolutions.Count; i++)
{
GADataSet.SolutionsRow currentSolution = listOfSolutions.ElementAt(i);
GADataSet.StringsRow currentString;
currentString = ds.Strings.NewStringsRow();
currentString.Initialize();
ds.Strings.AddStringsRow(currentString);
currentString.GAID = currentSolution.GAID;
currentString.ProblemID = currentSolution.ProblemID;
currentString.SolutionID = currentSolution.ID;
currentSolution.Counter = 1;
//decode
FillStrings(ref currentSolution, ref currentString);
// GNUPLOT(ref currentSolution);
//assign string ID... //this should be better
}
}
public override void FillStrings <T>(ref GADataSet.SolutionsRow r, ref T stringRow)
{
GADataSet.StringsRow s = stringRow as GADataSet.StringsRow;
s.AString = String.Join(" ", r.DataAxuliar.Select(d => Aid.DecimalTxt(d.A)));
s.BString = String.Join(" ", r.DataAxuliar.Select(d => Aid.DecimalTxt(d.B)));
s.CString = String.Join(" ", r.DataAxuliar.Select(d => Aid.DecimalTxt(d.C)));
}
/// <summary>
/// Generic RunWorker Completed for the background worker
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private static void GNUPLOT(ref GADataSet.SolutionsRow s)
{
string script = "set grid\n";
script += "set title 'Trajectories'\n";
script += "set xlabel 'X'\n";
script += "set ylabel 'Y'\n";
GADataSet.DataRow[] data = s.ProblemsRow.GetKnapDataRows();
double min = data.Min(o => o.A);
double max = data.Max(o => o.A);
script += "set xrange[" + (min - 1) + ":" + (max + 1) + "]\n";
min = data.Min(o => o.B);
max = data.Max(o => o.B);
script += "set yrange[" + (min - 1) + ":" + (max + 1) + "]\n";
script += "set terminal gif animate delay 100\n";
script += "set output FILENAME\n";
//get genotype string
string[] a = s.Genotype.Split(' ');
//clean nulls
a = a.Where(o => !string.IsNullOrEmpty(o)).ToArray();
//make a data .txt file with A,B,C points
for (int i = 0; i < a.Length; i++)
{
// if (string.IsNullOrEmpty(a[i])) continue;
string aa = data.ElementAt(Convert.ToInt32(a[i]) - 1).A + "\t";
aa += data.ElementAt(Convert.ToInt32(a[i]) - 1).B + "\t";
aa += data.ElementAt(Convert.ToInt32(a[i]) - 1).C;
// string fileindex = i;
script += "plot '" + i + ".txt' using 1:2:3 with points palette pointsize 2 pointtype 5\n";
System.IO.File.WriteAllText(i + ".txt", aa);
}
//make gnuplot script file
string scriptFile = Guid.NewGuid().ToString().Substring(0, 6);
System.IO.File.WriteAllText(scriptFile + ".gp", script);
//execute gnuplot
System.Diagnostics.Process p = new System.Diagnostics.Process();
p.StartInfo.FileName = "gnuplot";
p.StartInfo.Arguments = "-e \"FILENAME='" + scriptFile + ".gif'\" " + scriptFile + ".gp";
p.StartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
p.Start();
p.WaitForExit();
//add image to Chromosome
s.Chromosome = System.IO.File.ReadAllBytes(scriptFile + ".gif");
}
public override void FillStrings <T>(ref GADataSet.SolutionsRow r, ref T s)
{
for (int i = 0; i < VariableNames.Length; i++)
{
string dummy = Aid.DecodeStrings(r.GenesAsInts, ProblemData, VariableNames[i]);
string field = VariableNames[i] + "String";
DataRow row = s as DataRow;
if (row.Table.Columns.Contains(field))
{
row.SetField(field, dummy); //first
}
}
}
/// <summary>
/// FUNCTION TO PERFORM AVERAGE AND HISTOGRAM
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="problema"></param>
public static void DoStatistics <T>(T problema)
{
GADataSet.ProblemsRow currentProblem = problema as GADataSet.ProblemsRow;
IEnumerable <GADataSet.GARow> gasrows = currentProblem.GetGARows();
int min = gasrows.Min(o => o.ChromosomeLength);
int max = gasrows.Max(o => o.ChromosomeLength);
HashSet <string> hash;
List <GADataSet.SolutionsRow> list;
// List<GADataSet.StringsRow> strs;
hash = new HashSet <string>();
list = new List <GADataSet.SolutionsRow>();
// strs = new List<GADataSet.StringsRow>();
//create lamda expression to filter
Func <GADataSet.SolutionsRow, bool> funcion;
funcion = FilterByGenotype(ref hash, ref list);
//iterate min max chromosome lenght for all genetic algorithms
for (int j = min; j <= max; j++)
{
gasrows = currentProblem.GetGARows();
IEnumerable <GADataSet.GARow> subs = gasrows
.Where(o => o.ChromosomeLength == j)
.ToList();
GADataSet.GARow subFirst = subs.FirstOrDefault();
subFirst.AverageGA(ref subs);
//select GARow childrens
IEnumerable <GADataSet.SolutionsRow> knaprows = subs
.SelectMany(o => o.GetSolutionsRows()).ToList();
hash.Clear(); //clear
list.Clear(); //clear
foreach (GADataSet.SolutionsRow item in knaprows)
{
funcion(item);
}
double bestFitness = list.Max(o => o.Fitness);
subFirst.Fitness = bestFitness;
int count = knaprows.Count();
for (int d = knaprows.Count() - 1; d >= 0; d--)
{
GADataSet.SolutionsRow s = knaprows.ElementAt(d);
if (s.ShouldDelete)
{
if (s.StringsRowParent != null)
{
s.StringsRowParent.Delete();
}
s.Delete();
}
else
{
s.GAID = subFirst.ID;
s.Generations /= s.Counter;
s.TimeSpan /= s.Counter;
}
}
count = subs.Count();
for (int d = subs.Count() - 1; d >= 1; d--)
{
subs.ElementAt(d).Delete();
}
}
}
/// <summary> /// DECODES THE CHROMOSOME DATA CALCULATIONS INTO STRINGS OF TEXT /// Fills the Strings Table based on the variableNames /// Needs to be overriden /// </summary> /// <typeparam name="T">DataRow of StringsTable</typeparam> /// <param name="r">Solutions row</param> /// <param name="s">DataRow of stringsTable to fill, e.g. Strings</param> public abstract void FillStrings <T>(ref GADataSet.SolutionsRow r, ref T s);
/// <summary> /// Finds the fitness and Fine for the chromosome /// Function necessary during Fitness.Evaluation() /// Function necessary during PostScript printing /// Needs to be overriden /// </summary> /// <param name="r"></param> /// <param name="s"></param> /// <param name="c"></param> public abstract void FillBasic(ref GADataSet.SolutionsRow r);
/// <summary>
/// BASIC CALCULATION NECESSARY FOR FITNESS
/// </summary>
/// <param name="r"></param>
/// <param name="c"></param>
public override void FillBasic(ref GADataSet.SolutionsRow r)
{
int badRoute = 1;
HashSet <int> nonRepeated = new HashSet <int>();
r.GenesAsInts.Where(o => nonRepeated.Add(o)).ToList();
double Fine = 0;
DataRow cond = Conditions.FirstOrDefault();
//if non-repeated list counts to number of variables.. OK!
if (nonRepeated.Count == ProblemData.Count())
{
try
{
List <int> fullList = nonRepeated.ToList();
fullList.Add(0); //adds origin to the end
//create rows for subtable Data auxiliar
for (int j = 0; j < fullList.Count; j++)
{
GADataSet.DataRow d = r.DataAxuliar.NewDataRow();
r.DataAxuliar.AddDataRow(d);
//auxiliar data row
for (int i = 0; i < VariableNames.Length; i++)
{
//Field A, B or C
string varField = VariableNames[i];
double var = Aid.SetDifferences(cond, fullList, j, ProblemData, varField);
d.SetField <double>(varField, var); //set Distance Differences for A or B
}
}
foreach (GADataSet.DataRow item in r.DataAxuliar)
{
double a2 = Math.Pow(item.A, 2); //x^2
double b2 = Math.Pow(item.B, 2); //y^2
item.C = Math.Sqrt(a2 + b2); //distance = sqrt (x^2,y^2)
}
//put total distance parcourred
double totalDistance = r.DataAxuliar.Sum(i => i.C);
Fine = totalDistance / (r.DataAxuliar.Count * 10);
fullList.Insert(0, 0);
foreach (GADataSet.ConditionsRow c in Conditions)
{
string prohibited = c.MinC.ToString() + c.MaxC.ToString();
string genotype = String.Join("", fullList.Select(o => o));
if (genotype.Contains(prohibited))
{
badRoute++;
}
}
// if (s.Fine > 1 && badRoute>1) s.Fine = 0.80;
if (Fine > 1)
{
Fine = 0.90;
}
fullList.Clear();
fullList = null;
}
catch (SystemException ex)
{
// e = ex.StackTrace;
}
}
else
{
Fine = cond.Field <double>("CFine"); //a million
}
nonRepeated.Clear();
nonRepeated = null;
r.Okays = badRoute.ToString() + " " + Decimal.Round(Convert.ToDecimal(Fine), 3);
r.Fitness = 1 - Fine; //max vol, max value * (1+fine)
r.Fitness /= badRoute;
r.Genotype = Aid.SetStrings(r.GenesAsInts);
}
/// <summary>
/// BASIC CALCULATION NECESSARY FOR FITNESS
/// </summary>
/// <param name="r"></param>
/// <param name="c"></param>
public override void FillBasic(ref GADataSet.SolutionsRow r)
{
y[] func = new y[5];
func[0] = y1;
func[1] = y2;
func[2] = y3;
func[3] = y4;
func[4] = y5;
// int badRoute = 1;
// HashSet<int> nonRepeated = new HashSet<int>();
// r.GenesAsInts.Where(o => nonRepeated.Add(o)).ToList();
// string e = string.Empty;
double Fine = 0;
double[] ai = r.GenesAsDoubles.ToArray();
double[] yi = new double[ai.Length];
double[] di = new double[ai.Length];
for (int i = 0; i < di.Length; i++)
{
di[i] = yi[i] = 0;
}
for (int i = 1; i < ai.Length; i++)
{
ai[i] *= 5;
}
foreach (DataRow d in this.ProblemData)
{
double x = d.Field <double>("A");
double yexp = d.Field <double>("B");
// for (int i = 1; i < ai.Length; i++)
{
// yi[0] = y1(ai, x);
// yi[1] = y2(ai, x);
// yi[2] = y3(ai, x);
// yi[3] = y4(ai, x);
// yi[4] = y5(ai, x);
int index = Convert.ToInt32(ai[0]);
yi[0] = func[index](ai, x);
di[0] += Math.Pow(yexp - yi[0], 2);
// di[1] += Math.Pow(yexp - yi[1], 2);
// di[2] += Math.Pow(yexp - yi[2], 2);
// di[3] += Math.Pow(yexp - yi[3], 2);
// di[4] += Math.Pow(yexp - yi[4], 2);
}
}
/*
* int goodEq = 0;
* double last = 10000;
* for (int i = 0; i < di.Length; i++)
* {
* if (di[i] < last)
* {
* last = di[i];
* goodEq = i;
* s.Fine = Math.Sqrt(di[i]);
*
* r.Okays = i + " " + Decimal.Round(Convert.ToDecimal(s.Fine), 2);
* }
* }
*/
Fine = Math.Sqrt(di[0]);
r.Okays = ai[0] + " " + Decimal.Round(Convert.ToDecimal(Fine), 3);
r.Fitness = 1 / (1 + Fine); //max vol, max value * (1+fine)
r.Genotype = Aid.SetStrings(r.GenesAsDoubles, 4);
// r.Fitness /= badRoute;
}
public override void FillStrings <T>(ref GADataSet.SolutionsRow r, ref T stringRow)
{
}