/// <summary>
/// Constructor
/// </summary>
/// <param name="problem">Problem to solve</param>
public PMOEAD(Problem problem)
: base(problem)
{
parentThread = null;
functionType = "_TCHE1";
id = 0;
}
/// <summary>
///
/// </summary>
/// <param name="parentThread"></param>
/// <param name="problem">Problem to solve</param>
/// <param name="id"></param>
/// <param name="numberOfThreads"></param>
public PMOEAD(PMOEAD parentThread, Problem problem, int id, int numberOfThreads)
: base(problem)
{
this.parentThread = parentThread;
this.numberOfThreads = numberOfThreads;
tasks = new Task[numberOfThreads];
functionType = "_TCHE1";
this.id = id;
}
private void CreateTask(Task[] tasks, PMOEAD parent, Core.Problem Problem, int j, int numberOfThreads)
{
tasks[j] = new Task(() => new PMOEAD(parent, Problem, j, numberOfThreads).Run());
}
public override SolutionSet Execute()
{
parentThread = this;
evaluations = 0;
JMetalCSharp.Utils.Utils.GetIntValueFromParameter(this.InputParameters, "maxEvaluations", ref maxEvaluations);
JMetalCSharp.Utils.Utils.GetIntValueFromParameter(this.InputParameters, "populationSize", ref populationSize);
JMetalCSharp.Utils.Utils.GetStringValueFromParameter(this.InputParameters, "dataDirectory", ref dataDirectory);
JMetalCSharp.Utils.Utils.GetIntValueFromParameter(this.InputParameters, "numberOfThreads", ref numberOfThreads);
tasks = new Task[numberOfThreads];
barrier = new Barrier(numberOfThreads);
population = new SolutionSet(populationSize);
indArray = new Solution[Problem.NumberOfObjectives];
JMetalCSharp.Utils.Utils.GetIntValueFromParameter(this.InputParameters, "T", ref t);
JMetalCSharp.Utils.Utils.GetIntValueFromParameter(this.InputParameters, "nr", ref nr);
JMetalCSharp.Utils.Utils.GetDoubleValueFromParameter(this.InputParameters, "delta", ref delta);
neighborhood = new int[populationSize][];
for (int i = 0; i < populationSize; i++)
{
neighborhood[i] = new int[t];
}
z = new double[Problem.NumberOfObjectives];
lambda = new double[populationSize][];
for (int i = 0; i < populationSize; i++)
{
lambda[i] = new double[Problem.NumberOfObjectives];
}
crossover = Operators["crossover"]; // default: DE crossover
mutation = Operators["mutation"]; // default: polynomial mutation
// STEP 1. Initialization
// STEP 1.1. Compute euclidean distances between weight vectors and find T
InitUniformWeight();
InitNeighborhood();
// STEP 1.2. Initialize population
InitPopulation();
// STEP 1.3. Initialize z
InitIdealPoint();
initTime = Environment.TickCount;
for (int j = 0; j < numberOfThreads; j++)
{
CreateTask(tasks, this, Problem, j, numberOfThreads);
tasks[j].Start();
}
for (int i = 0; i < numberOfThreads; i++)
{
try
{
tasks[i].Wait();
}
catch (Exception ex)
{
Console.WriteLine("Error in " + this.GetType().FullName + ".Execute()");
Logger.Log.Error(this.GetType().FullName + ".Execute()", ex);
}
}
Result = population;
return(population);
}
