source: branches/HeuristicLab.Problems.BioBoost/HeuristicLab.Problems.BioBoost/3.3/Operators/Mutation/BoundaryToggleRealVectorMutator.cs @ 13069

using HeuristicLab.BioBoost.ProblemDescription;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Data;
using HeuristicLab.Encodings.IntegerVectorEncoding;
using HeuristicLab.Encodings.RealVectorEncoding;
using HeuristicLab.Parameters;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using System;
using System.Linq;

namespace HeuristicLab.BioBoost.Operators.Mutation {
  [StorableClass]
  public class BoundaryToggleRealVectorMutator : RealVectorManipulator {

    #region Construction & Cloning
    [StorableConstructor]
    protected BoundaryToggleRealVectorMutator(bool isDeserializing) : base(isDeserializing) { }
    protected BoundaryToggleRealVectorMutator(BoundaryToggleRealVectorMutator orig, Cloner cloner) : base(orig, cloner) { }
    public BoundaryToggleRealVectorMutator() { }
    public override IDeepCloneable Clone(Cloner cloner) {
      return new BoundaryToggleRealVectorMutator(this, cloner);
    }
    #endregion

    protected override void Manipulate(IRandom random, RealVector realVector) {
      var bounds = BoundsParameter.ActualValue;
      var idx = random.Next(realVector.Length);
      var value = realVector[idx];
      var lowerBound = bounds[idx % bounds.Rows, 0];
      var upperBound = bounds[idx % bounds.Rows, 1];
      if (value <= lowerBound || value >= upperBound) {
        value = random.Next()*Math.Abs(upperBound - lowerBound) + Math.Min(lowerBound, upperBound);
      } else {
        value = random.NextDouble() <= 0.5 ? lowerBound : upperBound;
      }
      realVector[idx] = value;
    }
  }
}