1  #region License Information


2  /* HeuristicLab


3  * Copyright (C) 20022015 Joseph Helm and Heuristic and Evolutionary Algorithms Laboratory (HEAL)


4  *


5  * This file is part of HeuristicLab.


6  *


7  * HeuristicLab is free software: you can redistribute it and/or modify


8  * it under the terms of the GNU General Public License as published by


9  * the Free Software Foundation, either version 3 of the License, or


10  * (at your option) any later version.


11  *


12  * HeuristicLab is distributed in the hope that it will be useful,


13  * but WITHOUT ANY WARRANTY; without even the implied warranty of


14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the


15  * GNU General Public License for more details.


16  *


17  * You should have received a copy of the GNU General Public License


18  * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.


19  */


20  #endregion


21 


22 


23  using HeuristicLab.Common;


24  using HeuristicLab.Core;


25  using HeuristicLab.Data;


26  using HeuristicLab.Encodings.PermutationEncoding;


27  using HeuristicLab.Operators;


28  using HeuristicLab.Optimization;


29  using HeuristicLab.Parameters;


30  using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;


31 


32  namespace HeuristicLab.Encodings.PackingEncoding.PackingSequence {


33  [Item("PackingSequenceCreator", "Creator class used to create PackingSequence solutions for bin packing problems.")]


34  [StorableClass]


35  public class PackingSequenceRandomCreator : PackingSolutionCreator, IPackingSequenceCreator, IStochasticOperator {


36 


37  public ILookupParameter<IRandom> RandomParameter {


38  get { return (LookupParameter<IRandom>)Parameters["Random"]; }


39  }


40  public ILookupParameter<IntValue> NumberOfPackingItemsParameter {


41  get { return (ILookupParameter<IntValue>)Parameters["NumberOfItems"]; }


42  }


43 


44  public ILookupParameter<Permutation> SolutionParameter {


45  get { return (ILookupParameter<Permutation>)Parameters["PackingSequence"]; }


46  }


47 


48  [StorableConstructor]


49  protected PackingSequenceRandomCreator(bool deserializing) : base(deserializing) { }


50  protected PackingSequenceRandomCreator(PackingSequenceRandomCreator original, Cloner cloner)


51  : base(original, cloner) {


52  }


53  public override IDeepCloneable Clone(Cloner cloner) {


54  return new PackingSequenceRandomCreator(this, cloner);


55  }


56 


57  public PackingSequenceRandomCreator()


58  : base() {


59  Parameters.Add(new LookupParameter<IRandom>("Random", "The pseudo random number generator."));


60  Parameters.Add(new ValueLookupParameter<IntValue>("NumberOfPackingItems", "The number of packingitems handled in this problem instance."));


61  Parameters.Add(new LookupParameter<Permutation>("PackingSequence", "The randomly created solution candidate."));


62  }


63 


64  public override IOperation Apply() {


65  Apply(NumberOfPackingItemsParameter.ActualValue.Value, RandomParameter.ActualValue);


66  return base.Apply();


67  }


68 


69  public static Permutation Apply(int items, IRandom random) {


70  return new Permutation(PermutationTypes.Absolute, items, random);


71  }


72  protected override IItem CreateSolution() {


73  return Apply(NumberOfPackingItemsParameter.ActualValue.Value, RandomParameter.ActualValue);


74  }


75  }


76  }

