[5127] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[17226] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[5127] | 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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[8053] | 22 | using HeuristicLab.Common;
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[5127] | 23 | using HeuristicLab.Core;
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[8053] | 24 | using HeuristicLab.Data;
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[5127] | 25 | using HeuristicLab.Parameters;
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[16723] | 26 | using HEAL.Attic;
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[5127] | 27 |
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| 28 | namespace HeuristicLab.Problems.VehicleRouting.Encodings.Potvin {
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| 29 | [Item("PotvinCustomerRelocationMoveEvaluator", "Evaluates a customer relocation move for a VRP representation. ")]
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[16723] | 30 | [StorableType("6289C1EA-7223-4BCC-97FD-884E668B6AF4")]
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[5127] | 31 | public sealed class PotvinCustomerRelocationMoveEvaluator : PotvinMoveEvaluator, IPotvinCustomerRelocationMoveOperator {
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| 32 | public ILookupParameter<PotvinCustomerRelocationMove> CustomerRelocationMoveParameter {
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| 33 | get { return (ILookupParameter<PotvinCustomerRelocationMove>)Parameters["PotvinCustomerRelocationMove"]; }
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| 34 | }
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| 35 |
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| 36 | public override ILookupParameter VRPMoveParameter {
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| 37 | get { return CustomerRelocationMoveParameter; }
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| 38 | }
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| 39 |
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[5202] | 40 | public ILookupParameter<VariableCollection> MemoriesParameter {
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| 41 | get { return (ILookupParameter<VariableCollection>)Parameters["Memories"]; }
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[5127] | 42 | }
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| 43 |
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[5202] | 44 | public IValueParameter<StringValue> AdditionFrequencyMemoryKeyParameter {
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| 45 | get { return (IValueParameter<StringValue>)Parameters["AdditionFrequencyMemoryKey"]; }
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[5127] | 46 | }
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| 47 |
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| 48 | public IValueParameter<DoubleValue> LambdaParameter {
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| 49 | get { return (IValueParameter<DoubleValue>)Parameters["Lambda"]; }
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| 50 | }
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| 51 |
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| 52 | [StorableConstructor]
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[16723] | 53 | private PotvinCustomerRelocationMoveEvaluator(StorableConstructorFlag _) : base(_) { }
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[5127] | 54 |
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| 55 | public PotvinCustomerRelocationMoveEvaluator()
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| 56 | : base() {
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[8053] | 57 | Parameters.Add(new LookupParameter<PotvinCustomerRelocationMove>("PotvinCustomerRelocationMove", "The move that should be evaluated."));
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[5127] | 58 |
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[8053] | 59 | Parameters.Add(new LookupParameter<VariableCollection>("Memories", "The TS memory collection."));
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| 60 | Parameters.Add(new ValueParameter<StringValue>("AdditionFrequencyMemoryKey", "The key that is used for the addition frequency in the TS memory.", new StringValue("AdditionFrequency")));
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| 61 | Parameters.Add(new ValueParameter<DoubleValue>("Lambda", "The lambda parameter.", new DoubleValue(0.015)));
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[5127] | 62 | }
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| 63 |
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| 64 | public override IDeepCloneable Clone(Cloner cloner) {
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| 65 | return new PotvinCustomerRelocationMoveEvaluator(this, cloner);
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| 66 | }
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| 67 |
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| 68 | private PotvinCustomerRelocationMoveEvaluator(PotvinCustomerRelocationMoveEvaluator original, Cloner cloner)
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| 69 | : base(original, cloner) {
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| 70 | }
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| 71 |
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| 72 | protected override void EvaluateMove() {
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| 73 | PotvinCustomerRelocationMove move = CustomerRelocationMoveParameter.ActualValue;
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| 74 |
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[17698] | 75 | PotvinEncodedSolution newSolution = CustomerRelocationMoveParameter.ActualValue.Individual.Clone() as PotvinEncodedSolution;
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[6751] | 76 | PotvinCustomerRelocationMoveMaker.Apply(newSolution, move, ProblemInstance);
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[5127] | 77 |
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| 78 | UpdateEvaluation(newSolution);
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| 79 |
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| 80 | //Apply memory, only if move is worse
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| 81 | if (MoveQualityParameter.ActualValue.Value >= QualityParameter.ActualValue.Value) {
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[5202] | 82 | VariableCollection memory = MemoriesParameter.ActualValue;
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| 83 | string key = AdditionFrequencyMemoryKeyParameter.Value.Value;
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| 84 |
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[5867] | 85 | if (memory != null && memory.ContainsKey(key)) {
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[5202] | 86 | ItemDictionary<PotvinCustomerRelocationMoveAttribute, IntValue> additionFrequency =
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| 87 | memory[key].Value as ItemDictionary<PotvinCustomerRelocationMoveAttribute, IntValue>;
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[5127] | 88 | PotvinCustomerRelocationMoveAttribute attr = new PotvinCustomerRelocationMoveAttribute(0, move.Tour, move.City);
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| 89 | if (additionFrequency.ContainsKey(attr)) {
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| 90 | int frequency = additionFrequency[attr].Value;
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[6751] | 91 | double quality = MoveQualityParameter.ActualValue.Value;
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[5127] | 92 |
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| 93 | MoveQualityParameter.ActualValue.Value +=
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[6751] | 94 | LambdaParameter.Value.Value * quality * frequency;
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[5127] | 95 | }
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| 96 | }
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| 97 | }
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[8053] | 98 | }
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[5127] | 99 | }
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| 100 | }
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