[13368] | 1 | #region License Information
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[12566] | 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2015 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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[7128] | 22 | using System.Collections.Generic;
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| 23 | using System.Linq;
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[12566] | 24 | using HeuristicLab.Common;
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[7128] | 25 | using HeuristicLab.Core;
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| 26 | using HeuristicLab.Data;
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[12566] | 27 | using HeuristicLab.Encodings.BinaryVectorEncoding;
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[7128] | 28 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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| 29 |
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| 30 | namespace HeuristicLab.Problems.NK {
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| 31 | [Item("IncreasingBlockSizeInteractionsInitializer", "Randomly assignes interactions across all bits but makes sure that different numbers of ineractions are applied to different bits.")]
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[14711] | 32 | [StorableType("030C1FA8-2B11-42E8-B0CE-A87B0BF21399")]
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[12592] | 33 | public sealed class IncreasingBlockSizeInteractionsInitializer : ParameterizedNamedItem, IInteractionInitializer {
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[7128] | 34 | [StorableConstructor]
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[12582] | 35 | private IncreasingBlockSizeInteractionsInitializer(bool serializing) : base(serializing) { }
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| 36 | private IncreasingBlockSizeInteractionsInitializer(IncreasingBlockSizeInteractionsInitializer original, Cloner cloner) : base(original, cloner) { }
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| 37 | public IncreasingBlockSizeInteractionsInitializer() { }
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[7128] | 38 | public override IDeepCloneable Clone(Cloner cloner) {
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| 39 | return new IncreasingBlockSizeInteractionsInitializer(this, cloner);
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[12566] | 40 | }
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[7128] | 41 |
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| 42 | public BoolMatrix InitializeInterations(int length, int nComponents, int nInteractions, IRandom random) {
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| 43 | Dictionary<int, int> bitInteractionCounts = new Dictionary<int, int>();
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[12566] | 44 | for (int i = 0; i < length; i++) {
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| 45 | int count = nInteractions * 2 * i / length;
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[7128] | 46 | if (count > 0)
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| 47 | bitInteractionCounts[i] = count;
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| 48 | }
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| 49 | List<BinaryVector> components = new List<BinaryVector>();
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| 50 | while (bitInteractionCounts.Count > 0) {
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| 51 | BinaryVector component = new BinaryVector(length);
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[12566] | 52 | for (int i = 0; i < nInteractions; i++) {
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[7128] | 53 | while (bitInteractionCounts.Count > 0) {
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| 54 | int bit = bitInteractionCounts.ElementAt(random.Next(bitInteractionCounts.Count)).Key;
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| 55 | if (bitInteractionCounts[bit]-- <= 0)
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| 56 | bitInteractionCounts.Remove(bit);
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| 57 | if (!component[bit]) {
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| 58 | component[bit] = true;
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| 59 | break;
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| 60 | }
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[12566] | 61 | }
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[7128] | 62 | }
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| 63 | components.Add(component);
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[12566] | 64 | }
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[7128] | 65 | BoolMatrix m = new BoolMatrix(length, components.Count);
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[12566] | 66 | foreach (var c in components.Select((v, j) => new { v, j })) {
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| 67 | for (int i = 0; i < c.v.Length; i++) {
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[7128] | 68 | m[i, c.j] = c.v[i];
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[12566] | 69 | }
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[7128] | 70 | }
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| 71 | return m;
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| 72 | }
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| 73 | }
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| 74 | }
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