#region License Information
/* HeuristicLab
* Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
*
* This file is part of HeuristicLab.
*
* HeuristicLab is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* HeuristicLab is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with HeuristicLab. If not, see .
*/
#endregion
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Operators;
using HeuristicLab.Parameters;
using HEAL.Attic;
namespace HeuristicLab.Algorithms.ALPS {
[Item("OldestAverageYoungestAgeCalculator", "An operator which calculates the oldest, average and youngest age of solutions in the scope tree.")]
[StorableType("DF4FA02E-C328-4A6E-9096-5BFADFA9F5DE")]
public sealed class OldestAverageYoungestAgeCalculator : SingleSuccessorOperator {
public IScopeTreeLookupParameter AgeParameter {
get { return (IScopeTreeLookupParameter)Parameters["Age"]; }
}
public IValueLookupParameter OldestAgeParameter {
get { return (IValueLookupParameter)Parameters["OldestAge"]; }
}
public IValueLookupParameter AverageAgeParameter {
get { return (IValueLookupParameter)Parameters["AverageAge"]; }
}
public IValueLookupParameter YoungestAgeParameter {
get { return (IValueLookupParameter)Parameters["YoungestAge"]; }
}
#region Storing & Cloning
[StorableConstructor]
private OldestAverageYoungestAgeCalculator(StorableConstructorFlag _) : base(_) { }
private OldestAverageYoungestAgeCalculator(OldestAverageYoungestAgeCalculator original, Cloner cloner) : base(original, cloner) { }
public override IDeepCloneable Clone(Cloner cloner) {
return new OldestAverageYoungestAgeCalculator(this, cloner);
}
#endregion
public OldestAverageYoungestAgeCalculator()
: base() {
Parameters.Add(new ScopeTreeLookupParameter("Age", "The value contained in the scope tree which represents the solution age."));
Parameters.Add(new ValueLookupParameter("OldestAge", "The age value of the oldest solution."));
Parameters.Add(new ValueLookupParameter("AverageAge", "The average age of all solutions."));
Parameters.Add(new ValueLookupParameter("YoungestAge", "The age value of the youngest solution."));
OldestAgeParameter.Hidden = true;
AverageAgeParameter.Hidden = true;
YoungestAgeParameter.Hidden = true;
}
public override IOperation Apply() {
var ages = AgeParameter.ActualValue;
if (ages.Length > 0) {
double min = double.MaxValue, max = double.MinValue, sum = 0;
for (int i = 0; i < ages.Length; i++) {
if (ages[i].Value < min) min = ages[i].Value;
if (ages[i].Value > max) max = ages[i].Value;
sum += ages[i].Value;
}
var oldest = OldestAgeParameter.ActualValue;
if (oldest == null) OldestAgeParameter.ActualValue = new DoubleValue(max);
else oldest.Value = max;
var average = AverageAgeParameter.ActualValue;
if (average == null) AverageAgeParameter.ActualValue = new DoubleValue(sum / ages.Length);
else average.Value = sum / ages.Length;
var youngest = YoungestAgeParameter.ActualValue;
if (youngest == null) YoungestAgeParameter.ActualValue = new DoubleValue(min);
else youngest.Value = min;
}
return base.Apply();
}
}
}