1 | using System;
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2 | #region License Information
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3 | /* HeuristicLab
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4 | * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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5 | *
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6 | * This file is part of HeuristicLab.
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7 | *
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8 | * HeuristicLab is free software: you can redistribute it and/or modify
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9 | * it under the terms of the GNU General Public License as published by
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10 | * the Free Software Foundation, either version 3 of the License, or
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11 | * (at your option) any later version.
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12 | *
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13 | * HeuristicLab is distributed in the hope that it will be useful,
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 | * GNU General Public License for more details.
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17 | *
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18 | * You should have received a copy of the GNU General Public License
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19 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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20 | */
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21 | #endregion
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22 |
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23 | using HeuristicLab.Operators;
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24 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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25 | using HeuristicLab.Core;
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26 | using HeuristicLab.Common;
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27 | using HeuristicLab.Data;
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28 | using HeuristicLab.Parameters;
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29 | using HeuristicLab.Encodings.PermutationEncoding;
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30 |
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31 | namespace HeuristicLab.Problems.LinearAssignment {
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32 | [Item("LAPEvaluator", "Evaluates a solution to the linear assignment problem.")]
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33 | [StorableClass]
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34 | public class LAPEvaluator : InstrumentedOperator, ILAPEvaluator {
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35 |
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36 | public ILookupParameter<DoubleMatrix> CostsParameter {
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37 | get { return (ILookupParameter<DoubleMatrix>)Parameters["Costs"]; }
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38 | }
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39 | public ILookupParameter<Permutation> AssignmentParameter {
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40 | get { return (ILookupParameter<Permutation>)Parameters["Assignment"]; }
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41 | }
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42 | public ILookupParameter<DoubleValue> QualityParameter {
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43 | get { return (ILookupParameter<DoubleValue>)Parameters["Quality"]; }
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44 | }
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45 |
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46 | [StorableConstructor]
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47 | protected LAPEvaluator(bool deserializing) : base(deserializing) { }
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48 | protected LAPEvaluator(LAPEvaluator original, Cloner cloner) : base(original, cloner) { }
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49 | public LAPEvaluator()
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50 | : base() {
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51 | Parameters.Add(new LookupParameter<DoubleMatrix>("Costs", LinearAssignmentProblem.CostsDescription));
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52 | Parameters.Add(new LookupParameter<Permutation>("Assignment", "The assignment solution to evaluate."));
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53 | Parameters.Add(new LookupParameter<DoubleValue>("Quality", "The quality value of the solution."));
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54 | }
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55 |
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56 | public override IDeepCloneable Clone(Cloner cloner) {
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57 | return new LAPEvaluator(this, cloner);
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58 | }
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59 |
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60 | public override IOperation InstrumentedApply() {
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61 | var costs = CostsParameter.ActualValue;
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62 | var assignment = AssignmentParameter.ActualValue;
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63 | if (costs == null || assignment == null) throw new InvalidOperationException(Name + ": Cannot find Costs or Assignment.");
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64 |
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65 | int len = assignment.Length;
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66 | double quality = 0;
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67 | for (int i = 0; i < len; i++) {
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68 | quality += costs[i, assignment[i]];
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69 | }
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70 |
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71 | QualityParameter.ActualValue = new DoubleValue(quality);
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72 | return base.InstrumentedApply();
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73 | }
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74 | }
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75 | }
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