public static double GetLoadRate(this PlantSet plantSet, double demandPower)
{
var totalPower = plantSet.GetTotalPower();
if (demandPower > totalPower)
{
return(0);
}
return(demandPower / totalPower);
}
public static double Fitness(this PlantSet plantSet, double demandPower)
{
if (plantSet.GetTotalPower() < demandPower)
{
return(0);
}
var loadRate = plantSet.GetLoadRate(demandPower);
var averageCost = plantSet.GetAverageCost(demandPower);
var averageCo2 = plantSet.GetAverageCO2(demandPower);
var fitness = loadRate + 1 / averageCost + 1 / averageCo2;
return(fitness);
}
public static double GetAverageCO2(this PlantSet plantSet, double demandPower)
{
var totalPower = plantSet.GetTotalPower();
if (demandPower > totalPower)
{
return(double.PositiveInfinity);
}
var totalCo2 = 0.0;
foreach (var gene in plantSet)
{
totalCo2 += gene.CO2 * gene.Power * gene.Count;
}
return(totalCo2 / totalPower);
}
static void Main(string[] args)
{
var stopWatch = new Stopwatch();
stopWatch.Start();
var maxGeneration = 2000;
var generation = 0;
var bestFitness = 0.0;
PlantSet bestPlantSet = null;
var populationSize = 1000;
var demandPower = 10000;
//Init population
var population = PopulationGenerator.Generate(populationSize).ToList();
while (generation < maxGeneration)
{
//For each partical update pbest and gbest
foreach (var p in population)
{
var fitness = p.Fitness(demandPower);
p.UpdatePBest(fitness);
p.UpdateGBest(fitness);
p.UpdateBestFitness(fitness);
}
//Get the best one
population = population.OrderBy(x => x.FitnessLast).ToList();
var lastP = population.Last();
//Save the best one
if (lastP.GetTotalPower() >= demandPower)
{
var fitness = lastP.FitnessLast;
if (fitness > bestFitness)
{
bestFitness = fitness;
bestPlantSet = lastP.Copy();
}
}
Console.WriteLine(bestPlantSet);
Console.WriteLine($"Best fitness: {bestPlantSet.Fitness(demandPower)}");
Console.WriteLine($"Best Total Power: {bestPlantSet.GetTotalPower()}");
Console.WriteLine($"Best LoadRate: {bestPlantSet.GetLoadRate(demandPower)}");
Console.WriteLine($"Best Cost: {bestPlantSet.GetAverageCost(demandPower)}");
Console.WriteLine($"Best CO2: {bestPlantSet.GetAverageCO2(demandPower)}");
Console.WriteLine($"Gen: {generation}");
Console.WriteLine($"=========================");
//This the known best solution.
if (Math.Abs(bestFitness - 1.1054208443867) < 0.0001)
{
break;
}
//Move partical
var w = WCalculator.CalcW(generation, maxGeneration);
foreach (var p in population)
{
p.NextPosition(w);
}
generation++;
}
stopWatch.Stop();
Console.WriteLine($"Execution Time:{stopWatch.Elapsed.TotalSeconds}");
Console.ReadKey();
}