[13259] | 1 | using System.Collections.Generic;
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[11753] | 2 | using HeuristicLab.Core;
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| 3 | using HeuristicLab.Optimization;
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| 4 |
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[11893] | 5 | namespace HeuristicLab.Problems.ExternalEvaluation {
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| 6 | public class CompiledSingleObjectiveOptimizationSupport : CompiledOptimizationSupport, ISingleObjectiveOptimizationSupport {
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[11753] | 7 |
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[11880] | 8 | public void Analyze(Individual[] individuals, double[] qualities, ResultCollection results, IRandom random) {
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| 9 | // Use vars.yourVariable to access variables in the variable store i.e. yourVariable
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| 10 | // Write or update results given the range of vectors and resulting qualities
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| 11 | // Uncomment the following lines if you want to retrieve the best individual
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[13259] | 12 | // Maximization:
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| 13 | // var bestIndex = qualities.Select((v, i) => Tuple.Create(i, v)).OrderByDescending(x => x.Item2).First().Item1;
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| 14 | // Minimization:
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| 15 | // var bestIndex = qualities.Select((v, i) => Tuple.Create(i, v)).OrderBy(x => x.Item2).First().Item1;
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| 16 | // var best = individuals[bestIndex];
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[11753] | 17 | }
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| 18 |
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| 19 | public IEnumerable<Individual> GetNeighbors(Individual individual, IRandom random) {
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[11880] | 20 | // Use vars.yourVariable to access variables in the variable store i.e. yourVariable
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[11753] | 21 | // Create new vectors, based on the given one that represent small changes
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[11880] | 22 | // This method is only called from move-based algorithms (Local Search, Simulated Annealing, etc.)
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[11753] | 23 | while (true) {
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[11880] | 24 | // Algorithm will draw only a finite amount of samples
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| 25 | // Change to a for-loop to return a concrete amount of neighbors
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[11753] | 26 | var neighbor = individual.Copy();
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[11880] | 27 | // For instance, perform a single bit-flip in a binary parameter
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[11753] | 28 | //var bIndex = random.Next(neighbor.BinaryVector("b").Length);
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| 29 | //neighbor.BinaryVector("b")[bIndex] = !neighbor.BinaryVector("b")[bIndex];
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| 30 | yield return neighbor;
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| 31 | }
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| 32 | }
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| 33 |
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[11880] | 34 | // Implement further classes and methods
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[11753] | 35 | }
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| 36 | }
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