Last change
on this file since 16233 was
16233,
checked in by ddorfmei, 6 years ago
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#2931:
- added all available parameters OR-Tools's linear_solver to LinearProgrammingAlgorithm
- added necessary parameter enums
- moved solving logic to Solver
- created IncrementalSolver, ExternalSolver, ExternalIncrementalSolver
- added logic for solvers that can be stopped and resumed
- added SupportsStop property to BasicAlgorithm
- added quality per time chart for incremental solvers
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File size:
1.5 KB
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1 | using HeuristicLab.Core;
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2 | using HeuristicLab.Data;
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3 | using HeuristicLab.MathematicalOptimization.LinearProgramming.Algorithms.Solvers.Base;
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4 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
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5 |
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6 | namespace HeuristicLab.MathematicalOptimization.LinearProgramming.Algorithms.Solvers {
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7 |
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8 | [Item("Clp/Cbc", "Clp (https://projects.coin-or.org/Clp) and Cbc (https://projects.coin-or.org/Cbc) can be used out of the box.")]
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9 | [StorableClass]
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10 | public class CoinOrSolver : IncrementalSolver {
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11 |
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12 | public CoinOrSolver() {
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13 | programmingTypeParam.Value.ValueChanged += (sender, args) => {
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14 | if (((EnumValue<LinearProgrammingType>)sender).Value == LinearProgrammingType.LinearProgramming) {
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15 | incrementalityParam.Value = new BoolValue(true);
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16 | incrementalityParam.Value.ValueChanged += (s, a) => {
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17 | if (((BoolValue)s).Value) {
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18 | qualityUpdateIntervalParam.Value = new TimeSpanValue(qualityUpdateIntervalParam.Value.Value);
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19 | } else {
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20 | qualityUpdateIntervalParam.Value = (TimeSpanValue)qualityUpdateIntervalParam.Value.AsReadOnly();
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21 | }
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22 | };
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23 | } else {
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24 | incrementalityParam.Value = (BoolValue)new BoolValue().AsReadOnly();
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25 | }
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26 | };
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27 | }
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28 |
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29 | public override OptimizationProblemType OptimizationProblemType =>
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30 | LinearProgrammingType == LinearProgrammingType.LinearProgramming
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31 | ? OptimizationProblemType.CLP_LINEAR_PROGRAMMING
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32 | : OptimizationProblemType.CBC_MIXED_INTEGER_PROGRAMMING;
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33 | }
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34 | } |
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