[13938] | 1 | #region License Information
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| 2 |
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| 3 | /* HeuristicLab
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| 4 | * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 5 | *
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| 6 | * This file is part of HeuristicLab.
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| 7 | *
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| 8 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 9 | * it under the terms of the GNU General Public License as published by
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| 10 | * the Free Software Foundation, either version 3 of the License, or
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| 11 | * (at your option) any later version.
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| 12 | *
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| 13 | * HeuristicLab is distributed in the hope that it will be useful,
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | * GNU General Public License for more details.
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| 17 | *
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| 18 | * You should have received a copy of the GNU General Public License
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| 19 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 20 | */
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| 21 |
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| 22 | #endregion
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| 23 |
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| 24 | using System;
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| 25 | using System.Collections.Generic;
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| 26 | using System.ComponentModel;
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| 27 | using System.Linq;
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| 28 | using HeuristicLab.PluginInfrastructure;
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| 29 |
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| 30 | namespace HeuristicLab.Problems.DataAnalysis.Views {
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| 31 | [NonDiscoverableType]
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| 32 | public abstract class AbstractFeatureCorrelationCalculator {
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| 33 | private readonly BackgroundWorker backgroundWorker;
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| 34 |
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| 35 | public AbstractFeatureCorrelationCalculator() {
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| 36 | backgroundWorker = new BackgroundWorker { WorkerReportsProgress = true, WorkerSupportsCancellation = true };
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| 37 |
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| 38 | backgroundWorker.DoWork += BackgroundWorker_DoWork;
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| 39 | backgroundWorker.ProgressChanged += BackgroundWorker_ProgressChanged;
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| 40 | backgroundWorker.RunWorkerCompleted += BackgroundWorker_RunWorkerCompleted;
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| 41 | }
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| 42 |
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| 43 | private BackgroundWorkerInfo bwInfo;
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| 44 | public void TryCancelCalculation() {
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| 45 | if (!backgroundWorker.IsBusy) return;
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| 46 |
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| 47 | bwInfo = null;
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| 48 | backgroundWorker.CancelAsync();
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| 49 | }
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| 50 |
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| 51 | protected static IEnumerable<int> GetRelevantIndices(IDataAnalysisProblemData problemData, string partition) {
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| 52 | IEnumerable<int> var;
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| 53 | if (partition.Equals(AbstractFeatureCorrelationView.TRAININGSAMPLES))
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| 54 | var = problemData.TrainingIndices;
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| 55 | else if (partition.Equals(AbstractFeatureCorrelationView.TESTSAMPLES))
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| 56 | var = problemData.TestIndices;
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| 57 | else var = Enumerable.Range(0, problemData.Dataset.Rows);
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| 58 | return var;
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| 59 | }
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| 60 |
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| 61 | #region backgroundworker
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| 62 |
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| 63 | protected void StartCalculation(BackgroundWorkerInfo info) {
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| 64 | bwInfo = info;
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| 65 | if (backgroundWorker.IsBusy) {
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| 66 | backgroundWorker.CancelAsync();
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| 67 | return;
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| 68 | }
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| 69 |
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| 70 | backgroundWorker.RunWorkerAsync(bwInfo);
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| 71 | }
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| 72 |
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| 73 | protected abstract void BackgroundWorker_DoWork(object sender, DoWorkEventArgs e);
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| 74 |
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| 75 | private void BackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) {
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| 76 | BackgroundWorker worker = (BackgroundWorker)sender;
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| 77 | if (!e.Cancelled && !worker.CancellationPending) {
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| 78 | if (e.Error != null) {
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| 79 | ErrorHandling.ShowErrorDialog(e.Error);
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| 80 | } else {
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| 81 | OnCorrelationCalculationFinished((double[,])e.Result, bwInfo.Calculator, bwInfo.Partition, bwInfo.IgnoreMissingValues, bwInfo.Variable);
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| 82 | }
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| 83 | } else if (bwInfo != null) {
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| 84 | backgroundWorker.RunWorkerAsync(bwInfo);
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| 85 | }
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| 86 | }
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| 87 |
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| 88 | #endregion
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| 89 |
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| 90 | #region events
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| 91 | public class CorrelationCalculationFinishedArgs : EventArgs {
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| 92 | public double[,] Correlation { get; private set; }
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| 93 | public IDependencyCalculator Calculcator { get; private set; }
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| 94 | public string Partition { get; private set; }
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| 95 | public bool IgnoreMissingValues { get; private set; }
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| 96 | public string Variable { get; private set; }
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| 97 |
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| 98 |
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| 99 | public CorrelationCalculationFinishedArgs(double[,] correlation, IDependencyCalculator calculator, string partition, bool ignoreMissingValues, string variable = null) {
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| 100 | this.Correlation = correlation;
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| 101 | this.Calculcator = calculator;
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| 102 | this.Partition = partition;
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| 103 | this.IgnoreMissingValues = ignoreMissingValues;
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| 104 | this.Variable = variable;
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| 105 | }
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| 106 | }
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| 107 |
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| 108 | public delegate void CorrelationCalculationFinishedHandler(object sender, CorrelationCalculationFinishedArgs e);
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| 109 | public event CorrelationCalculationFinishedHandler CorrelationCalculationFinished;
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| 110 | protected virtual void OnCorrelationCalculationFinished(double[,] correlation, IDependencyCalculator calculator, string partition, bool ignoreMissingValues, string variable = null) {
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| 111 | var handler = CorrelationCalculationFinished;
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| 112 | if (handler != null)
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| 113 | handler(this, new CorrelationCalculationFinishedArgs(correlation, calculator, partition, ignoreMissingValues, variable));
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| 114 | }
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| 115 |
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| 116 | public event ProgressChangedEventHandler ProgressChanged;
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| 117 | protected virtual void BackgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e) {
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| 118 | var handler = ProgressChanged;
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| 119 | if (handler != null) {
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| 120 | handler(sender, e);
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| 121 | }
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| 122 | }
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| 123 | #endregion
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| 124 |
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| 125 | protected class BackgroundWorkerInfo {
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| 126 | public IDataset Dataset { get; set; }
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| 127 | public IDependencyCalculator Calculator { get; set; }
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| 128 | public string Partition { get; set; }
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| 129 | public IEnumerable<int> Indices { get; set; }
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| 130 |
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| 131 | public bool IgnoreMissingValues { get; set; }
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| 132 |
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| 133 | public string Variable { get; set; }
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| 134 | public int Frames { get; set; }
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| 135 | public double[,] AlreadyCalculated { get; set; }
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| 136 | }
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| 137 | }
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| 138 | }
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