[2900] | 1 | #region License Information
|
---|
| 2 | /* HeuristicLab
|
---|
[5445] | 3 | * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
|
---|
[2900] | 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 | using System;
|
---|
[4722] | 23 | using HeuristicLab.Common;
|
---|
[2900] | 24 | using HeuristicLab.Core;
|
---|
| 25 | using HeuristicLab.Data;
|
---|
[2913] | 26 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
[2900] | 27 |
|
---|
[3053] | 28 | namespace HeuristicLab.Encodings.RealVectorEncoding {
|
---|
[2900] | 29 | /// <summary>
|
---|
[2913] | 30 | /// Uniformly distributed change of a single position in a real vector.
|
---|
[2900] | 31 | /// </summary>
|
---|
[2913] | 32 | /// <remarks>
|
---|
| 33 | /// It is implemented as described in Michalewicz, Z. 1999. Genetic Algorithms + Data Structures = Evolution Programs. Third, Revised and Extended Edition, Spring-Verlag Berlin Heidelberg.
|
---|
| 34 | /// </remarks>
|
---|
[3123] | 35 | [Item("UniformOnePositionManipulator", "Changes a single position in the vector by sampling uniformly from the interval [Minimum_i, Maximum_i) in dimension i. It is implemented as described in Michalewicz, Z. 1999. Genetic Algorithms + Data Structures = Evolution Programs. Third, Revised and Extended Edition, Spring-Verlag Berlin Heidelberg.")]
|
---|
[3017] | 36 | [StorableClass]
|
---|
[2913] | 37 | public class UniformOnePositionManipulator : RealVectorManipulator {
|
---|
[4722] | 38 | [StorableConstructor]
|
---|
| 39 | protected UniformOnePositionManipulator(bool deserializing) : base(deserializing) { }
|
---|
| 40 | protected UniformOnePositionManipulator(UniformOnePositionManipulator original, Cloner cloner) : base(original, cloner) { }
|
---|
| 41 | public UniformOnePositionManipulator() : base() { }
|
---|
| 42 |
|
---|
| 43 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
| 44 | return new UniformOnePositionManipulator(this, cloner);
|
---|
| 45 | }
|
---|
| 46 |
|
---|
[2921] | 47 | /// <summary>
|
---|
[2900] | 48 | /// Changes randomly a single position in the given real <paramref name="vector"/>.
|
---|
| 49 | /// </summary>
|
---|
| 50 | /// <param name="random">A random number generator.</param>
|
---|
| 51 | /// <param name="vector">The real vector to manipulate.</param>
|
---|
[3123] | 52 | /// <param name="bounds">The lower and upper bound (1st and 2nd column) of the positions in the vector. If there are less rows than dimensions, the rows are cycled.</param>
|
---|
| 53 | public static void Apply(IRandom random, RealVector vector, DoubleMatrix bounds) {
|
---|
[2913] | 54 | int index = random.Next(vector.Length);
|
---|
[3123] | 55 | double min = bounds[index % bounds.Rows, 0];
|
---|
| 56 | double max = bounds[index % bounds.Rows, 1];
|
---|
| 57 | vector[index] = min + random.NextDouble() * (max - min);
|
---|
[2900] | 58 | }
|
---|
| 59 |
|
---|
| 60 | /// <summary>
|
---|
[3123] | 61 | /// Checks if the bounds parameters is available and forwards the call to <see cref="Apply(IRandom, RealVector, DoubleMatrix)"/>.
|
---|
[2900] | 62 | /// </summary>
|
---|
[2913] | 63 | /// <param name="random">The random number generator to use.</param>
|
---|
| 64 | /// <param name="realVector">The real vector to manipulate.</param>
|
---|
[3060] | 65 | protected override void Manipulate(IRandom random, RealVector realVector) {
|
---|
[3123] | 66 | if (BoundsParameter.ActualValue == null) throw new InvalidOperationException("MichalewiczNonUniformOnePositionManipulator: Parameter " + BoundsParameter.ActualName + " could not be found.");
|
---|
| 67 | Apply(random, realVector, BoundsParameter.ActualValue);
|
---|
[2900] | 68 | }
|
---|
| 69 | }
|
---|
| 70 | }
|
---|