protected override double CalculateFitness()
{
if (!Genotype.IsValidConfiguration())
{
return(0);
}
var fitnessAvg = 0.0;
var runtimeAvg = TimeSpan.Zero;
for (int i = 0; i < FitnessRuns; i++)
{
var stopwatch = new Stopwatch();
stopwatch.Start();
fitnessAvg += targetEA.Evolve().Winner.Fitness;
stopwatch.Stop();
runtimeAvg += stopwatch.Elapsed;
}
fitnessAvg /= FitnessRuns;
runtimeAvg = TimeSpan.FromTicks(runtimeAvg.Ticks / FitnessRuns);
TargetEARuntimeAverage = runtimeAvg;
TargetEAFitnessAverage = fitnessAvg;
return(targetEA.EAConfiguration.Mode == EAMode.MaximizeFitness
? fitnessAvg / runtimeAvg.TotalSeconds
: 1 / ((fitnessAvg + 1) * runtimeAvg.TotalSeconds));
}