[15510] | 1 | using System.Collections.Generic;
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| 2 | using System.Linq;
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[15504] | 3 | using HeuristicLab.Common;
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| 4 | using HeuristicLab.Core;
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| 5 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 6 |
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| 7 | namespace HeuristicLab.Problems.GeneralizedQuadraticAssignment {
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| 8 | [Item("GQAP Evaluation", "Class that contains the results of evaluating a solution to the GQAP.")]
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| 9 | [StorableClass]
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| 10 | public class Evaluation : Item {
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| 11 |
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| 12 | /// <summary>
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| 13 | /// The solution is feasible if there is no excess demand
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| 14 | /// </summary>
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| 15 | public bool IsFeasible { get { return ExcessDemand <= double.Epsilon; } }
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| 16 |
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| 17 | /// <summary>
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| 18 | /// The amount of demand that exceeds the respective capacities
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| 19 | /// </summary>
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| 20 | [Storable]
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[15510] | 21 | public double ExcessDemand { get; private set; }
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[15504] | 22 | /// <summary>
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| 23 | /// The amount of slack at each location, is negative in case of excess demand.
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| 24 | /// </summary>
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| 25 | /// <remarks>
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| 26 | /// Slack.Select(x => x < 0 ? -x : 0).Sum() is equivalent to <see cref="ExcessDemand"/>.
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| 27 | /// </remarks>
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| 28 | [Storable]
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[15510] | 29 | private double[] slack;
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| 30 | public IReadOnlyList<double> Slack {
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| 31 | get { return slack; }
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| 32 | }
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[15504] | 33 | /// <summary>
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| 34 | /// The quadratic part of the fitness function that represents the flow or transportation costs.
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| 35 | /// </summary>
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| 36 | [Storable]
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[15510] | 37 | public double FlowCosts { get; private set; }
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[15504] | 38 | /// <summary>
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| 39 | /// The linear part of the fitness function that represents the installation costs.
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| 40 | /// </summary>
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| 41 | [Storable]
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[15510] | 42 | public double InstallationCosts { get; private set; }
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[15504] | 43 |
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| 44 | [StorableConstructor]
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| 45 | protected Evaluation(bool deserializing) : base(deserializing) { }
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| 46 | protected Evaluation(Evaluation original, Cloner cloner)
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| 47 | : base(original, cloner) {
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| 48 | ExcessDemand = original.ExcessDemand;
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[15510] | 49 | if (original.slack != null)
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| 50 | slack = original.slack.ToArray();
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[15504] | 51 | FlowCosts = original.FlowCosts;
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| 52 | InstallationCosts = original.InstallationCosts;
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| 53 | }
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[15510] | 54 | public Evaluation(double flowCosts, double installationCosts, double excessDemand, double[] slack) {
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| 55 | FlowCosts = flowCosts;
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| 56 | InstallationCosts = installationCosts;
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| 57 | ExcessDemand = excessDemand;
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| 58 | this.slack = slack;
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| 59 | }
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[15504] | 60 |
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| 61 | public override IDeepCloneable Clone(Cloner cloner) {
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| 62 | return new Evaluation(this, cloner);
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| 63 | }
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| 64 | }
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| 65 | }
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