1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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 | using System.Collections.Generic;
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23 | using HeuristicLab.Core;
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24 | using HeuristicLab.Data;
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25 | using HeuristicLab.Operators;
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26 | using HeuristicLab.Optimization;
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27 | using HeuristicLab.Parameters;
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28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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29 |
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30 | namespace HeuristicLab.Selection {
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31 | /// <summary>
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32 | /// A base class for selection operators.
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33 | /// </summary>
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34 | [Item("Selector", "A base class for selection operators.")]
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35 | [EmptyStorableClass]
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36 | public abstract class Selector : SingleSuccessorOperator, ISelector {
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37 | protected ValueParameter<BoolData> CopySelectedParameter {
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38 | get { return (ValueParameter<BoolData>)Parameters["CopySelected"]; }
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39 | }
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40 | public IValueLookupParameter<IntData> NumberOfSelectedSubScopesParameter {
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41 | get { return (ValueLookupParameter<IntData>)Parameters["NumberOfSelectedSubScopes"]; }
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42 | }
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43 | protected ScopeParameter CurrentScopeParameter {
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44 | get { return (ScopeParameter)Parameters["CurrentScope"]; }
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45 | }
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46 |
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47 | public BoolData CopySelected {
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48 | get { return CopySelectedParameter.Value; }
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49 | set { CopySelectedParameter.Value = value; }
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50 | }
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51 | public IScope CurrentScope {
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52 | get { return CurrentScopeParameter.ActualValue; }
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53 | }
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54 |
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55 | protected Selector()
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56 | : base() {
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57 | Parameters.Add(new ValueParameter<BoolData>("CopySelected", "True if the selected sub-scopes should be copied, otherwise false.", new BoolData(false)));
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58 | Parameters.Add(new ValueLookupParameter<IntData>("NumberOfSelectedSubScopes", "The number of sub-scopes which should be selected."));
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59 | Parameters.Add(new ScopeParameter("CurrentScope", "The current scope from which sub-scopes should be selected."));
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60 | }
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61 |
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62 | public sealed override IOperation Apply() {
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63 | List<IScope> scopes = new List<IScope>(CurrentScope.SubScopes);
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64 | IScope[] selected = Select(scopes);
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65 |
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66 | CurrentScope.SubScopes.Clear();
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67 | IScope remainingScope = new Scope("Remaining");
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68 | remainingScope.SubScopes.AddRange(scopes);
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69 | CurrentScope.SubScopes.Add(remainingScope);
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70 | IScope selectedScope = new Scope("Selected");
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71 | selectedScope.SubScopes.AddRange(selected);
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72 | CurrentScope.SubScopes.Add(selectedScope);
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73 |
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74 | return base.Apply();
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75 | }
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76 |
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77 | protected abstract IScope[] Select(List<IScope> scopes);
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78 | }
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79 | }
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