| 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 | protected 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 | protected 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 | if (Successor != null)
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| 74 | return ExecutionContext.CreateOperation(Successor);
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| 75 | else
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| 76 | return null;
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| 77 | }
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| 78 | }
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| 79 | }
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