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/// ------------------------------------------------------
/// SwarmOps - Numeric and heuristic optimization for C#
/// Copyright (C) 2003-2011 Magnus Erik Hvass Pedersen.
/// Please see the file license.txt for license details.
/// SwarmOps on the internet: http://www.Hvass-Labs.org/
/// ------------------------------------------------------
using System;
using System.Collections.Generic;
namespace SwarmOps
{
/// <summary>
/// Candidate solution found during optimization, consisting of parameters
/// and fitness value.
/// </summary>
public class Solution
{
#region Constructors.
/// <summary>
/// Construct the object.
/// </summary>
/// <param name="parameters">Candidate solution parameters.</param>
/// <param name="fitness">Fitness for candidate solution.</param>
/// <param name="feasible">Feasibility of candidate solution.</param>
public Solution(double[] parameters, double fitness, bool feasible)
{
Parameters = parameters.Clone() as double[];
Fitness = fitness;
Feasible = feasible;
}
#endregion
#region Public fields.
/// <summary>
/// Candidate solution parameters.
/// </summary>
public double[] Parameters
{
get;
protected set;
}
/// <summary>
/// Fitness of candidate solution.
/// </summary>
public double Fitness
{
get;
protected set;
}
/// <summary>
/// Feasibility of candidate solution.
/// </summary>
public bool Feasible
{
get;
protected set;
}
#endregion
#region Comparer.
/// <summary>
/// Comparer used for sorting a list of Solution-objects
/// according to fitness and feasibility in ascending (worsening) order.
/// </summary>
public class FitnessComparer : IComparer<Solution>
{
public int Compare(Solution x, Solution y)
{
int retVal;
if (x.Fitness == y.Fitness && x.Feasible == y.Feasible)
{
retVal = 0;
}
else if (Tools.BetterFeasibleFitness(x.Feasible, y.Feasible, x.Fitness, y.Fitness))
{
retVal = 1;
}
else
{
retVal = -1;
}
return retVal;
}
}
#endregion
}
}
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