[7395] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[17246] | 3 | * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[7395] | 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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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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| 27 | using HeuristicLab.Data;
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| 28 | using HeuristicLab.Parameters;
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[16662] | 29 | using HEAL.Attic;
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[7395] | 30 |
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| 31 | namespace HeuristicLab.Operators {
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| 32 | [Item("DataReducer", "An operator to reduce values of sub scopes.")]
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[16662] | 33 | [StorableType("87DC7AB9-4C8D-4FF9-B0B0-70B7E7F32C3C")]
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[7395] | 34 | public sealed class DataReducer : SingleSuccessorOperator {
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| 35 | #region Parameter Properties
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| 36 | public ScopeTreeLookupParameter<IItem> ParameterToReduce {
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| 37 | get { return (ScopeTreeLookupParameter<IItem>)Parameters["ParameterToReduce"]; }
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| 38 | }
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| 39 | public LookupParameter<IItem> TargetParameter {
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| 40 | get { return (LookupParameter<IItem>)Parameters["TargetParameter"]; }
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| 41 | }
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[12072] | 42 | public ValueLookupParameter<ReductionOperation> ReductionOperation {
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| 43 | get { return (ValueLookupParameter<ReductionOperation>)Parameters["ReductionOperation"]; }
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[7395] | 44 | }
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[12072] | 45 | public ValueLookupParameter<ReductionOperation> TargetOperation {
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| 46 | get { return (ValueLookupParameter<ReductionOperation>)Parameters["TargetOperation"]; }
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[7395] | 47 | }
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| 48 | #endregion
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| 49 |
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| 50 | [StorableConstructor]
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[16662] | 51 | private DataReducer(StorableConstructorFlag _) : base(_) { }
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[7395] | 52 | private DataReducer(DataReducer original, Cloner cloner)
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| 53 | : base(original, cloner) {
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| 54 | }
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| 55 | public DataReducer()
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| 56 | : base() {
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| 57 | #region Create parameters
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| 58 | Parameters.Add(new ScopeTreeLookupParameter<IItem>("ParameterToReduce", "The parameter on which the reduction operation should be applied."));
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| 59 | Parameters.Add(new LookupParameter<IItem>("TargetParameter", "The target variable in which the reduced value should be stored."));
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[12072] | 60 | Parameters.Add(new ValueLookupParameter<ReductionOperation>("ReductionOperation", "The operation which is applied on the parameters to reduce.", new ReductionOperation()));
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| 61 | Parameters.Add(new ValueLookupParameter<ReductionOperation>("TargetOperation", "The operation used to apply the reduced value to the target variable.", new ReductionOperation()));
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[7395] | 62 | #endregion
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| 63 | }
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| 64 |
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| 65 | public override IDeepCloneable Clone(Cloner cloner) {
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| 66 | return new DataReducer(this, cloner);
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| 67 | }
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| 68 |
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[12072] | 69 | [StorableHook(HookType.AfterDeserialization)]
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| 70 | private void AfterDeserialization() {
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| 71 | // BackwardsCompatibility3.3
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| 72 | var oldReductionOperation = Parameters["ReductionOperation"] as ValueParameter<ReductionOperation>;
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| 73 | if (oldReductionOperation != null) {
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| 74 | Parameters.Remove("ReductionOperation");
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| 75 | Parameters.Add(new ValueLookupParameter<ReductionOperation>("ReductionOperation", "The operation which is applied on the parameters to reduce.", oldReductionOperation.Value));
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| 76 | }
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| 77 | var oldTargetOperation = Parameters["TargetOperation"] as ValueParameter<ReductionOperation>;
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| 78 | if (oldTargetOperation != null) {
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| 79 | Parameters.Remove("TargetOperation");
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| 80 | Parameters.Add(new ValueLookupParameter<ReductionOperation>("TargetOperation", "The operation used to apply the reduced value to the target variable.", oldTargetOperation.Value));
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| 81 | }
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| 82 | }
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| 83 |
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[7395] | 84 | public override IOperation Apply() {
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| 85 | var values = ParameterToReduce.ActualValue;
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[10196] | 86 | if (!values.Any()) return base.Apply();
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| 87 |
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| 88 | if (values.All(x => x is IntValue)) {
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| 89 | CalculateResult(values.OfType<IntValue>().Select(x => x.Value), values.First().GetType());
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| 90 | } else if (values.All(x => x is DoubleValue)) {
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| 91 | CalculateResult(values.OfType<DoubleValue>().Select(x => x.Value), values.First().GetType());
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| 92 | } else if (values.All(x => x is TimeSpanValue)) {
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| 93 | CalculateResult(values.OfType<TimeSpanValue>().Select(x => x.Value), values.First().GetType());
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| 94 | } else if (values.All(x => x is BoolValue)) {
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| 95 | CalculateResult(values.OfType<BoolValue>().Select(x => x.Value), values.First().GetType());
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| 96 | } else {
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| 97 | throw new ArgumentException(string.Format("Type {0} is not supported by the DataReducer.", values.First().GetType()));
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[7395] | 98 | }
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[10196] | 99 |
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[7395] | 100 | return base.Apply();
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| 101 | }
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| 102 |
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[8252] | 103 | #region integer reduction
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| 104 | private void CalculateResult(IEnumerable<int> values, Type targetType) {
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| 105 | int result;
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[12072] | 106 | switch (ReductionOperation.ActualValue.Value) {
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[7395] | 107 | case ReductionOperations.Sum:
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[8252] | 108 | result = values.Sum();
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[7395] | 109 | break;
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[8252] | 110 | case ReductionOperations.Product:
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| 111 | result = values.Aggregate(1, (x, y) => x * y);
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[7395] | 112 | break;
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[8252] | 113 | case ReductionOperations.Count:
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| 114 | result = values.Count();
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[7395] | 115 | break;
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| 116 | case ReductionOperations.Min:
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[8252] | 117 | result = values.Min();
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[7395] | 118 | break;
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| 119 | case ReductionOperations.Max:
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[8252] | 120 | result = values.Max();
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[7395] | 121 | break;
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[8252] | 122 | case ReductionOperations.Avg:
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| 123 | result = (int)Math.Round(values.Average());
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| 124 | break;
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| 125 | case ReductionOperations.Assign:
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| 126 | result = values.Last();
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| 127 | break;
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[7395] | 128 | default:
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[12072] | 129 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as ReductionOperation for type: {1}.", ReductionOperation.ActualValue.Value, targetType));
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[7395] | 130 | }
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| 131 |
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[8252] | 132 | IntValue target;
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[12072] | 133 | switch (TargetOperation.ActualValue.Value) {
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[7395] | 134 | case ReductionOperations.Sum:
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[8252] | 135 | target = InitializeTarget<IntValue, int>(targetType, 0);
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[7395] | 136 | target.Value += result;
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| 137 | break;
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[8252] | 138 | case ReductionOperations.Product:
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| 139 | target = InitializeTarget<IntValue, int>(targetType, 1);
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| 140 | target.Value = target.Value * result;
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[7395] | 141 | break;
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[8252] | 142 | case ReductionOperations.Min:
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| 143 | target = InitializeTarget<IntValue, int>(targetType, int.MaxValue);
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| 144 | target.Value = Math.Min(target.Value, result);
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| 145 | break;
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| 146 | case ReductionOperations.Max:
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| 147 | target = InitializeTarget<IntValue, int>(targetType, int.MinValue);
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| 148 | target.Value = Math.Max(target.Value, result);
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| 149 | break;
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| 150 | case ReductionOperations.Avg:
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| 151 | target = InitializeTarget<IntValue, int>(targetType, result);
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| 152 | target.Value = (int)Math.Round((target.Value + result) / 2.0);
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| 153 | break;
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| 154 | case ReductionOperations.Assign:
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| 155 | target = InitializeTarget<IntValue, int>(targetType, 0);
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| 156 | target.Value = result;
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| 157 | break;
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[7395] | 158 | default:
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[12072] | 159 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as TargetOperation for type: {1}.", TargetOperation.ActualValue.Value, targetType));
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[7395] | 160 | }
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| 161 | }
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[8252] | 162 | #endregion
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| 163 | #region double reduction
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| 164 | private void CalculateResult(IEnumerable<double> values, Type targetType) {
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| 165 | double result;
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[12072] | 166 | switch (ReductionOperation.ActualValue.Value) {
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[7395] | 167 | case ReductionOperations.Sum:
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[8252] | 168 | result = values.Sum();
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[7395] | 169 | break;
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[8252] | 170 | case ReductionOperations.Product:
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| 171 | result = values.Aggregate(1.0, (x, y) => x * y);
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[7395] | 172 | break;
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[8252] | 173 | case ReductionOperations.Count:
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| 174 | result = values.Count();
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[7395] | 175 | break;
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| 176 | case ReductionOperations.Min:
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[8252] | 177 | result = values.Min();
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[7395] | 178 | break;
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| 179 | case ReductionOperations.Max:
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[8252] | 180 | result = values.Max();
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[7395] | 181 | break;
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[8252] | 182 | case ReductionOperations.Avg:
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| 183 | result = values.Average();
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| 184 | break;
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| 185 | case ReductionOperations.Assign:
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| 186 | result = values.Last();
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| 187 | break;
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[7395] | 188 | default:
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[12072] | 189 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as ReductionOperation for type: {1}.", ReductionOperation.ActualValue.Value, targetType));
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[7395] | 190 | }
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| 191 |
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[8252] | 192 | DoubleValue target;
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[12072] | 193 | switch (TargetOperation.ActualValue.Value) {
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[7395] | 194 | case ReductionOperations.Sum:
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[8252] | 195 | target = InitializeTarget<DoubleValue, double>(targetType, 0.0);
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[7395] | 196 | target.Value += result;
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| 197 | break;
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[8252] | 198 | case ReductionOperations.Product:
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| 199 | target = InitializeTarget<DoubleValue, double>(targetType, 1.0);
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| 200 | target.Value = target.Value * result;
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[7395] | 201 | break;
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[8252] | 202 | case ReductionOperations.Min:
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| 203 | target = InitializeTarget<DoubleValue, double>(targetType, double.MaxValue);
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| 204 | target.Value = Math.Min(target.Value, result);
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| 205 | break;
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| 206 | case ReductionOperations.Max:
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| 207 | target = InitializeTarget<DoubleValue, double>(targetType, double.MinValue);
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| 208 | target.Value = Math.Max(target.Value, result);
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| 209 | break;
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| 210 | case ReductionOperations.Avg:
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| 211 | target = InitializeTarget<DoubleValue, double>(targetType, result);
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| 212 | target.Value = (target.Value + result) / 2.0;
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| 213 | break;
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| 214 | case ReductionOperations.Assign:
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| 215 | target = InitializeTarget<DoubleValue, double>(targetType, 0.0);
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| 216 | target.Value = result;
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| 217 | break;
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[7395] | 218 | default:
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[12072] | 219 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as TargetOperation for type: {1}.", TargetOperation.ActualValue.Value, targetType));
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[7395] | 220 | }
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| 221 | }
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[8252] | 222 | #endregion
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| 223 | #region TimeSpan reduction
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| 224 | private void CalculateResult(IEnumerable<TimeSpan> values, Type targetType) {
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| 225 | TimeSpan result;
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[12072] | 226 | switch (ReductionOperation.ActualValue.Value) {
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[7395] | 227 | case ReductionOperations.Sum:
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[8252] | 228 | result = values.Aggregate(new TimeSpan(), (x, y) => x + y);
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[7395] | 229 | break;
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| 230 | case ReductionOperations.Min:
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[8252] | 231 | result = values.Min();
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[7395] | 232 | break;
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| 233 | case ReductionOperations.Max:
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[8252] | 234 | result = values.Max();
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[7395] | 235 | break;
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[8252] | 236 | case ReductionOperations.Avg:
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| 237 | result = TimeSpan.FromMilliseconds(values.Average(x => x.TotalMilliseconds));
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| 238 | break;
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| 239 | case ReductionOperations.Assign:
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| 240 | result = values.Last();
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| 241 | break;
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[7395] | 242 | default:
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[12072] | 243 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as ReductionOperation for type: {1}.", ReductionOperation.ActualValue.Value, targetType));
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[7395] | 244 | }
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| 245 |
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[8252] | 246 | TimeSpanValue target;
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[12072] | 247 | switch (TargetOperation.ActualValue.Value) {
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[8252] | 248 | case ReductionOperations.Sum:
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| 249 | target = InitializeTarget<TimeSpanValue, TimeSpan>(targetType, new TimeSpan());
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| 250 | target.Value += result;
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| 251 | break;
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| 252 | case ReductionOperations.Min:
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| 253 | target = InitializeTarget<TimeSpanValue, TimeSpan>(targetType, TimeSpan.MaxValue);
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| 254 | target.Value = target.Value < result ? target.Value : result;
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| 255 | break;
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| 256 | case ReductionOperations.Max:
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| 257 | target = InitializeTarget<TimeSpanValue, TimeSpan>(targetType, TimeSpan.MinValue);
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| 258 | target.Value = target.Value > result ? target.Value : result;
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| 259 | break;
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| 260 | case ReductionOperations.Avg:
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| 261 | target = InitializeTarget<TimeSpanValue, TimeSpan>(targetType, result);
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| 262 | target.Value = TimeSpan.FromMilliseconds((target.Value.TotalMilliseconds + result.TotalMilliseconds) / 2);
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| 263 | break;
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[7395] | 264 | case ReductionOperations.Assign:
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[8252] | 265 | target = InitializeTarget<TimeSpanValue, TimeSpan>(targetType, new TimeSpan());
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[7395] | 266 | target.Value = result;
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| 267 | break;
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| 268 | default:
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[12072] | 269 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as TargetOperation for type: {1}.", TargetOperation.ActualValue.Value, targetType));
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[7395] | 270 | }
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| 271 | }
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[8252] | 272 | #endregion
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[10196] | 273 | #region bool reduction
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| 274 | private void CalculateResult(IEnumerable<bool> values, Type targetType) {
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| 275 | bool result;
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[12072] | 276 | switch (ReductionOperation.ActualValue.Value) {
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[10196] | 277 | case ReductionOperations.All:
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| 278 | result = values.All(x => x);
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| 279 | break;
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| 280 | case ReductionOperations.Any:
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| 281 | result = values.Any(x => x);
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| 282 | break;
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| 283 | default:
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[12072] | 284 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as ReductionOperation for type: {1}.", ReductionOperation.ActualValue.Value, targetType));
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[10196] | 285 | }
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[8252] | 286 |
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[10196] | 287 | BoolValue target;
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[12072] | 288 | switch (TargetOperation.ActualValue.Value) {
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[10196] | 289 | case ReductionOperations.Assign:
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| 290 | target = InitializeTarget<BoolValue, bool>(targetType, true);
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| 291 | target.Value = result;
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| 292 | break;
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| 293 | default:
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[12072] | 294 | throw new InvalidOperationException(string.Format("Operation {0} is not supported as TargetOperation for type: {1}.", TargetOperation.ActualValue.Value, targetType));
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[10196] | 295 | }
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| 296 | }
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| 297 | #endregion
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| 298 |
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[8252] | 299 | #region helpers
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| 300 | private T1 InitializeTarget<T1, T2>(Type targetType, T2 initialValue)
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| 301 | where T1 : ValueTypeValue<T2>
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| 302 | where T2 : struct {
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| 303 | T1 target = (T1)TargetParameter.ActualValue;
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| 304 | if (target == null) {
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| 305 | target = (T1)Activator.CreateInstance(targetType);
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| 306 | TargetParameter.ActualValue = target;
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| 307 | target.Value = initialValue;
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| 308 | }
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| 309 | return target;
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| 310 | }
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| 311 | #endregion
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[7395] | 312 | }
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| 313 | }
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