[13069] | 1 | using System;
|
---|
| 2 | using System.Collections.Generic;
|
---|
| 3 | using System.ComponentModel;
|
---|
| 4 | using System.Diagnostics;
|
---|
| 5 | using HeuristicLab.BioBoost.Data;
|
---|
| 6 | using HeuristicLab.BioBoost.ProblemDescription;
|
---|
| 7 | using HeuristicLab.BioBoost.Utils;
|
---|
| 8 | using HeuristicLab.Common;
|
---|
| 9 | using HeuristicLab.Core;
|
---|
| 10 | using HeuristicLab.Data;
|
---|
| 11 | using HeuristicLab.Encodings.IntegerVectorEncoding;
|
---|
| 12 | using HeuristicLab.Encodings.RealVectorEncoding;
|
---|
| 13 | using HeuristicLab.Operators;
|
---|
| 14 | using HeuristicLab.Optimization;
|
---|
| 15 | using HeuristicLab.Parameters;
|
---|
| 16 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
| 17 | using HeuristicLab.PluginInfrastructure;
|
---|
| 18 | using System.Linq;
|
---|
| 19 | using HeuristicLab.BioBoost.Representation;
|
---|
| 20 | using HeuristicLab.Random;
|
---|
| 21 | using DiscreteIntegerVectorCrossover = HeuristicLab.Encodings.IntegerVectorEncoding.DiscreteCrossover;
|
---|
| 22 | using DiscreteRealVectorCrossover = HeuristicLab.Encodings.RealVectorEncoding.DiscreteCrossover;
|
---|
| 23 |
|
---|
| 24 | namespace HeuristicLab.BioBoost.Operators.Crossover {
|
---|
| 25 | [StorableClass]
|
---|
| 26 | public class PlantBasedCrossover : SingleSuccessorOperator, ICrossover, IStochasticOperator {
|
---|
| 27 |
|
---|
| 28 | #region Parameters
|
---|
| 29 | public ValueLookupParameter<IntMatrix> RegionBoundsParameter {
|
---|
| 30 | get { return (ValueLookupParameter<IntMatrix>)Parameters["RegionBounds"]; }
|
---|
| 31 | }
|
---|
| 32 | public LookupParameter<BioBoostProblemData> ProblemDataParameter {
|
---|
| 33 | get { return (LookupParameter<BioBoostProblemData>)Parameters["ProblemData"]; }
|
---|
| 34 | }
|
---|
| 35 | public ILookupParameter<IRandom> RandomParameter { get { return (ILookupParameter<IRandom>) Parameters["Random"]; } }
|
---|
| 36 | public IValueLookupParameter<IntValue> OrderingParameter { get { return (IValueLookupParameter<IntValue>) Parameters["Ordering"]; } }
|
---|
| 37 | public IValueLookupParameter<IntValue> FrequencyParameter { get { return (IValueLookupParameter<IntValue>) Parameters["Frequency"]; } }
|
---|
| 38 | public IValueLookupParameter<PercentValue> FairnessParameter { get { return (IValueLookupParameter<PercentValue>) Parameters["Fairness"]; } }
|
---|
| 39 | #endregion
|
---|
| 40 |
|
---|
| 41 | #region Parameter Values
|
---|
| 42 | public BioBoostProblemData ProblemData { get { return ProblemDataParameter.ActualValue; } }
|
---|
| 43 | public IRandom Random { get { return RandomParameter.ActualValue; } }
|
---|
| 44 | public int Ordering { get { return OrderingParameter.ActualValue.Value; } }
|
---|
| 45 | public int Frequency { get { return FrequencyParameter.ActualValue.Value; } }
|
---|
| 46 | public double Fairness { get { return FairnessParameter.ActualValue.Value; } }
|
---|
| 47 | #endregion
|
---|
| 48 |
|
---|
| 49 | #region Construction & Cloning
|
---|
| 50 | [StorableConstructor]
|
---|
| 51 | protected PlantBasedCrossover(bool isDeserializing) : base(isDeserializing) { }
|
---|
| 52 | protected PlantBasedCrossover(PlantBasedCrossover orig, Cloner cloner) : base(orig, cloner) { }
|
---|
| 53 |
|
---|
| 54 | public PlantBasedCrossover() {
|
---|
| 55 | Parameters.Add(new LookupParameter<BioBoostProblemData>("ProblemData", "The data store of the detailed problem description."));
|
---|
| 56 | Parameters.Add(new ValueLookupParameter<IntMatrix>("RegionBounds", "The limits of valid region ids."));
|
---|
| 57 | Parameters.Add(new LookupParameter<IRandom>("Random", "A/The random value generator."));
|
---|
| 58 | Parameters.Add(new ValueLookupParameter<IntValue>("Ordering", "Choose ordering 1: largest-first, -1: smallest first, 0: random", new IntValue(1)));
|
---|
| 59 | Parameters.Add(new ValueLookupParameter<IntValue>("Frequency", "Number of crossover points -1: random, 0: after every plant, n: n times", new IntValue(1)));
|
---|
| 60 | Parameters.Add(new ValueLookupParameter<PercentValue>("Fairness", "Amount of fairness: 0 don't bother, 1 avoid favoring one parent", new PercentValue(0)));
|
---|
| 61 | }
|
---|
| 62 |
|
---|
| 63 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
| 64 | return new PlantBasedCrossover(this, cloner);
|
---|
| 65 | }
|
---|
| 66 |
|
---|
| 67 | [StorableHook(HookType.AfterDeserialization)]
|
---|
| 68 | public void AfterDeserialization() {
|
---|
| 69 | if (!Parameters.ContainsKey("Ordering"))
|
---|
| 70 | Parameters.Add(new ValueLookupParameter<IntValue>("Ordering", "Choose ordering 1: largest-first, -1: smallest first, 0: random", new IntValue(0)));
|
---|
| 71 | if (!Parameters.ContainsKey("Frequency"))
|
---|
| 72 | Parameters.Add(new ValueLookupParameter<IntValue>("Frequency", "Number of crossover points -n: random (1-n), 0: ignore (order-based only), n: n times", new IntValue(0)));
|
---|
| 73 | if (!Parameters.ContainsKey("Fairness"))
|
---|
| 74 | Parameters.Add(new ValueLookupParameter<PercentValue>("Fairness", "Amount of fairness 0: don't bother - 1: avoid favoring one parent", new PercentValue(0)));
|
---|
| 75 | }
|
---|
| 76 | #endregion
|
---|
| 77 |
|
---|
| 78 | public override IOperation Apply() {
|
---|
| 79 | var nParents = ExecutionContext.Scope.SubScopes.Count;
|
---|
| 80 | if (nParents == 0) return base.Apply();
|
---|
| 81 | foreach (var product in ProblemData.TransportTargets.CheckedItems) {
|
---|
| 82 | var targets = new IntegerVector[nParents];
|
---|
| 83 | var utilizations = new RealVector[nParents];
|
---|
| 84 | foreach (var i in Enumerable.Range(0, nParents))
|
---|
| 85 | GetVectors(ExecutionContext.Scope.SubScopes[i], product.Value.Value, out targets[i], out utilizations[i]);
|
---|
| 86 | if (targets.Any(t => t == null)) continue;
|
---|
| 87 | var plants = Enumerable.Range(0, nParents)
|
---|
| 88 | .Select(parent => targets[parent].Select((target, source) => new {parent, target, source}).GroupBy(p => p.target))
|
---|
| 89 | .Aggregate((x, y) => x.Concat(y))
|
---|
| 90 | .ToArray();
|
---|
| 91 | if (Ordering == 0) Util.Shuffle(plants, Random);
|
---|
| 92 | else if (Ordering < 0) Array.Sort(plants, (g1, g2) => g1.Count() - g2.Count());
|
---|
| 93 | else if (Ordering > 0) Array.Sort(plants, (g1, g2) => g2.Count() - g1.Count());
|
---|
| 94 | var freq = Math.Min(Math.Abs(Frequency), plants.Length);
|
---|
| 95 | var nTotalAssignedRegions = 0;
|
---|
| 96 | var nAssignRegions = new int[nParents];
|
---|
| 97 | var length = targets[0].Length;
|
---|
| 98 | var assignedRegions = Enumerable.Repeat(false, length).ToArray();
|
---|
| 99 | var newTargets = new IntegerVector(length);
|
---|
| 100 | var newUtilizations = utilizations[0] != null ? new RealVector(length) : null;
|
---|
| 101 | if (freq == 0) { // order-based
|
---|
| 102 | foreach (var plant in plants) {
|
---|
| 103 | if (nTotalAssignedRegions >= length) break;
|
---|
| 104 | if (nAssignRegions[plant.First().parent] > Fairness*nTotalAssignedRegions/nParents) // skip overrepresented parent's plant
|
---|
| 105 | break;
|
---|
| 106 | foreach (var supplier in plant) {
|
---|
| 107 | if (nTotalAssignedRegions >= length) break;
|
---|
| 108 | if (assignedRegions[supplier.source]) continue;
|
---|
| 109 | assignedRegions[supplier.source] = true;
|
---|
| 110 | newTargets[supplier.source] = supplier.target;
|
---|
| 111 | if (newUtilizations != null)
|
---|
| 112 | newUtilizations[supplier.source] = utilizations[supplier.parent][supplier.source];
|
---|
| 113 | nTotalAssignedRegions++;
|
---|
| 114 | }
|
---|
| 115 | }
|
---|
| 116 | } else { // frequency-based
|
---|
| 117 | var nCrossoverPoints = Frequency < 0 ? Random.Next(freq) : freq;
|
---|
| 118 | var crossoverPoints = Enumerable.Range(0, plants.Length);
|
---|
| 119 | if (nCrossoverPoints != plants.Length)
|
---|
| 120 | crossoverPoints = crossoverPoints.SampleRandom(Random, nCrossoverPoints);
|
---|
| 121 | var plantsByParent = plants.GroupBy(g => g.First().parent).OrderBy(g => g.Key).Select(g => g.ToQueue()).ToArray();
|
---|
| 122 | int currentParent = 0;
|
---|
| 123 | int i = 0;
|
---|
| 124 | foreach (var maxI in crossoverPoints) {
|
---|
| 125 | for (; i < maxI; i++) {
|
---|
| 126 | if (nAssignRegions[currentParent] > Fairness*nTotalAssignedRegions/nParents) // skip overrepresented parent's plant
|
---|
| 127 | foreach (var supplier in plantsByParent[currentParent].Dequeue()) {
|
---|
| 128 | if (nTotalAssignedRegions >= length) break;
|
---|
| 129 | if (assignedRegions[supplier.source]) continue;
|
---|
| 130 | assignedRegions[supplier.source] = true;
|
---|
| 131 | newTargets[supplier.source] = supplier.target;
|
---|
| 132 | if (newUtilizations != null)
|
---|
| 133 | newUtilizations[supplier.source] = utilizations[supplier.parent][supplier.source];
|
---|
| 134 | nTotalAssignedRegions++;
|
---|
| 135 | }
|
---|
| 136 | }
|
---|
| 137 | currentParent = (currentParent + 1)%nParents;
|
---|
| 138 | }
|
---|
| 139 | }
|
---|
| 140 | foreach (var region in assignedRegions // fill unassigned regions
|
---|
| 141 | .Select((b, i) => new {selected = b, idx = i})
|
---|
| 142 | .Where(p => !p.selected).Select(p => p.idx)) { // unassigned regions
|
---|
| 143 | int newParent;
|
---|
| 144 | if (Random.NextDouble() < Fairness) { // choose a fair parent
|
---|
| 145 | newParent = nAssignRegions.Select((parent, n) => new {parent, n}).OrderBy(p => p.n).Select(p => p.parent).First();
|
---|
| 146 | } else {
|
---|
| 147 | newParent = Random.Next(nParents);
|
---|
| 148 | }
|
---|
| 149 | // assignedRegions[region] = true;
|
---|
| 150 | newTargets[region] = targets[newParent][region];
|
---|
| 151 | if (newUtilizations != null)
|
---|
| 152 | newUtilizations[region] = utilizations[newParent][region];
|
---|
| 153 | }
|
---|
| 154 | SaveVectors(ExecutionContext.Scope, product.Value.Value, newTargets, newUtilizations);
|
---|
| 155 | }
|
---|
| 156 | return base.Apply();
|
---|
| 157 | }
|
---|
| 158 |
|
---|
| 159 | private void GetVectors(IScope scope, string product, out IntegerVector targets, out RealVector utilizations) {
|
---|
| 160 | IVariable targetsVar, utilizationsVar;
|
---|
| 161 | scope.Variables.TryGetValue(LayerDescriptor.TransportTargets.NameWithPrefix(product), out targetsVar);
|
---|
| 162 | scope.Variables.TryGetValue(LayerDescriptor.Utilizations.NameWithPrefix(product), out utilizationsVar);
|
---|
| 163 | targets = null;
|
---|
| 164 | utilizations = null;
|
---|
| 165 | if (targetsVar != null) targets = targetsVar.Value as IntegerVector;
|
---|
| 166 | if (utilizationsVar != null) utilizations = utilizationsVar.Value as RealVector;
|
---|
| 167 | }
|
---|
| 168 |
|
---|
| 169 | private void SaveVectors(IScope scope, string product, IntegerVector targets, RealVector utilizations) {
|
---|
| 170 | scope.Variables.Add(new Variable(LayerDescriptor.TransportTargets.NameWithPrefix(product), targets));
|
---|
| 171 | scope.Variables.Add(new Variable(LayerDescriptor.Utilizations.NameWithPrefix(product), utilizations));
|
---|
| 172 | }
|
---|
| 173 |
|
---|
| 174 | }
|
---|
| 175 | }
|
---|