1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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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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22 |
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23 | using HeuristicLab.Common;
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24 | using HeuristicLab.Core;
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25 | using HeuristicLab.Data;
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26 | using HeuristicLab.Parameters;
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27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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28 | namespace HeuristicLab.Problems.ExternalEvaluation {
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29 |
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30 | [Item("CachedExternalEvaluationValuesCollector", "Creates a solution message, and communicates it via the driver to receive a quality message, also keeps a cache of previous evaluation results.")]
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31 | [StorableClass]
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32 | public class CachedExternalEvaluator : ExternalEvaluator {
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33 |
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34 | #region Parameters
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35 | public OptionalValueParameter<EvaluationCache> CacheParameter {
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36 | get { return (OptionalValueParameter<EvaluationCache>)Parameters["Cache"]; }
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37 | }
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38 | #endregion
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39 |
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40 | #region Parameter Values
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41 | public EvaluationCache Cache {
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42 | get { return CacheParameter.Value; }
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43 | set { CacheParameter.Value = value; }
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44 | }
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45 | public DoubleValue Quality {
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46 | get { return QualityParameter.ActualValue; }
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47 | set { QualityParameter.ActualValue = value; }
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48 | }
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49 | public IEvaluationServiceClient Client {
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50 | get { return ClientParameter.ActualValue; }
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51 | }
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52 | #endregion
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53 |
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54 | #region Construction & Cloning
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55 | [StorableConstructor]
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56 | protected CachedExternalEvaluator(bool deserializing) : base(deserializing) { }
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57 | protected CachedExternalEvaluator(CachedExternalEvaluator original, Cloner cloner) : base(original, cloner) { }
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58 | public override IDeepCloneable Clone(Cloner cloner) {
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59 | return new CachedExternalEvaluator(this, cloner);
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60 | }
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61 | public CachedExternalEvaluator()
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62 | : base() {
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63 | Parameters.Add(new OptionalValueParameter<EvaluationCache>("Cache", "Cache of previously evaluated solutions"));
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64 | }
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65 | #endregion
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66 |
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67 | public override IOperation Apply() {
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68 | if (Cache == null) Cache = new EvaluationCache();
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69 | if (Quality == null) Quality = new DoubleValue(0);
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70 |
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71 | Quality.Value = Cache.GetValue(BuildSolutionMessage(), m => Client.Evaluate(m).Quality);
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72 |
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73 | return base.Apply();
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74 | }
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75 | }
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76 | }
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