1 | using System.Linq;
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2 | using System.Threading;
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3 | using System.Threading.Tasks;
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4 | using HEAL.Attic;
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5 | using HeuristicLab.Common;
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6 | using HeuristicLab.Core;
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7 | using HeuristicLab.Optimization;
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8 |
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9 | namespace HeuristicLab.Problems.Modifiers {
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10 | [StorableType("3985D750-03D4-4842-A34D-A352BED95190")]
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11 | public sealed class MultiObjectiveBasicProblemEvaluation : BasicAlgorithm {
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12 | public override bool SupportsPause => false;
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13 |
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14 | public new MultiObjectiveBasicProblem<IEncoding> Problem {
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15 | get => (MultiObjectiveBasicProblem<IEncoding>)base.Problem;
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16 | private set => base.Problem = value;
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17 | }
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18 |
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19 | [Storable]
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20 | public IScope IndividualScope { get; private set; }
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21 | [Storable]
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22 | public IRandom Random { get; private set; }
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23 | [Storable]
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24 | public double[] Qualities { get; private set; }
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25 |
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26 | #region Constructors & Cloning
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27 | [StorableConstructor]
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28 | private MultiObjectiveBasicProblemEvaluation(StorableConstructorFlag _) : base(_) { }
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29 | private MultiObjectiveBasicProblemEvaluation(MultiObjectiveBasicProblemEvaluation original, Cloner cloner) : base(original, cloner) {
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30 | IndividualScope = cloner.Clone(original.IndividualScope);
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31 | Random = cloner.Clone(original.Random);
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32 | Qualities = (double[])original.Qualities.Clone();
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33 | }
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34 | public MultiObjectiveBasicProblemEvaluation(MultiObjectiveBasicProblem<IEncoding> problem, IScope individualScope, IRandom random) {
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35 | Problem = problem;
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36 | IndividualScope = individualScope;
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37 | Random = random;
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38 | Qualities = Enumerable.Repeat(double.NaN, problem.Maximization.Length).ToArray();
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39 | }
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40 |
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41 | public override IDeepCloneable Clone(Cloner cloner) {
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42 | return new MultiObjectiveBasicProblemEvaluation(this, cloner);
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43 | }
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44 | #endregion
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45 |
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46 | protected override void Run(CancellationToken cancellationToken) {
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47 | var singleEncoding = Problem.Encoding;
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48 | var individual = Problem.Encoding is MultiEncoding multiEncoding
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49 | ? (Individual)new MultiEncodingIndividual(multiEncoding, IndividualScope)
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50 | : (Individual)new SingleEncodingIndividual(singleEncoding, IndividualScope);
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51 | var evaluationTask = Task.Run(() => Problem.Evaluate(individual, Random), cancellationToken);
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52 | evaluationTask.Wait(cancellationToken);
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53 | Qualities = evaluationTask.Result;
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54 | }
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55 | }
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56 | }
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