[13757] | 1 | using HeuristicLab.Optimization;
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| 2 | using System;
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| 3 | using System.Collections.Generic;
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[12956] | 4 | using System.Globalization;
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| 5 | using System.Linq;
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| 6 |
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| 7 | namespace HeuristicLab.Analysis {
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| 8 | public static class ExpectedRuntimeHelper {
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[13757] | 9 | public static ErtCalculationResult CalculateErt(IEnumerable<IEnumerable<Tuple<double, double>>> convGraphs, double target, bool maximization) {
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[12956] | 10 | var successful = new List<double>();
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| 11 | var unsuccessful = new List<double>();
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[13757] | 12 | foreach (var graph in convGraphs) {
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[12956] | 13 | var targetAchieved = false;
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[13757] | 14 | var lastEffort = double.MaxValue;
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| 15 | foreach (var v in graph) {
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[12956] | 16 | if (maximization && v.Item2 >= target || !maximization && v.Item2 <= target) {
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| 17 | successful.Add(v.Item1);
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| 18 | targetAchieved = true;
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| 19 | break;
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| 20 | }
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[13757] | 21 | lastEffort = v.Item1;
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[12956] | 22 | }
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[13757] | 23 | if (!targetAchieved) unsuccessful.Add(lastEffort);
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[12956] | 24 | }
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| 25 |
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| 26 | var ert = double.NaN;
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| 27 |
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| 28 | if (successful.Count > 0) {
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| 29 | if (unsuccessful.Count == 0) ert = successful.Average();
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| 30 | else {
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| 31 | var ps = successful.Count / (double)(successful.Count + unsuccessful.Count);
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| 32 | ert = successful.Average() + ((1.0 - ps) / ps) * unsuccessful.Average();
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| 33 | }
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| 34 | }
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| 35 | return new ErtCalculationResult(successful.Count, (successful.Count + unsuccessful.Count), ert);
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| 36 | }
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[13757] | 37 |
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| 38 | public static ErtCalculationResult CalculateErt(List<IRun> runs, string indexedDataTableName, double target, bool maximization) {
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| 39 | return CalculateErt(runs.Select(r => ((IndexedDataTable<double>)r.Results[indexedDataTableName]).Rows.First().Values), target, maximization);
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| 40 | }
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[12956] | 41 | }
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| 42 |
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| 43 | public struct ErtCalculationResult {
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| 44 | public int SuccessfulRuns;
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| 45 | public int TotalRuns;
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| 46 | public double ExpectedRuntime;
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| 47 |
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| 48 | public ErtCalculationResult(int successful, int total, double ert) {
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| 49 | SuccessfulRuns = successful;
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| 50 | TotalRuns = total;
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| 51 | ExpectedRuntime = ert;
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| 52 | }
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| 53 |
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| 54 | public override string ToString() {
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| 55 | return SuccessfulRuns == 0 ? "\u221e"
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| 56 | : ExpectedRuntime.ToString("##,0.0", CultureInfo.CurrentCulture.NumberFormat);
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| 57 | }
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| 58 | }
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| 59 | }
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