[4417] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[7268] | 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[4417] | 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 System.Windows.Forms;
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| 26 | using HeuristicLab.MainForm;
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| 27 | using HeuristicLab.MainForm.WindowsForms;
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| 28 |
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[5829] | 29 | namespace HeuristicLab.Problems.DataAnalysis.Views {
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[5975] | 30 | [View("Confusion Matrix")]
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[5664] | 31 | [Content(typeof(IClassificationSolution))]
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[6642] | 32 | public partial class ClassificationSolutionConfusionMatrixView : DataAnalysisSolutionEvaluationView {
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[4417] | 33 | private const string TrainingSamples = "Training";
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| 34 | private const string TestSamples = "Test";
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[5664] | 35 | public ClassificationSolutionConfusionMatrixView() {
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[4417] | 36 | InitializeComponent();
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| 37 | cmbSamples.Items.Add(TrainingSamples);
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| 38 | cmbSamples.Items.Add(TestSamples);
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| 39 | cmbSamples.SelectedIndex = 0;
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| 40 | }
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| 41 |
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[5664] | 42 | public new IClassificationSolution Content {
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| 43 | get { return (IClassificationSolution)base.Content; }
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[4417] | 44 | set { base.Content = value; }
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| 45 | }
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| 46 |
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| 47 | protected override void RegisterContentEvents() {
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| 48 | base.RegisterContentEvents();
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[5664] | 49 | Content.ModelChanged += new EventHandler(Content_ModelChanged);
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[4417] | 50 | Content.ProblemDataChanged += new EventHandler(Content_ProblemDataChanged);
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| 51 | }
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| 52 |
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| 53 |
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| 54 | protected override void DeregisterContentEvents() {
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| 55 | base.DeregisterContentEvents();
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[5664] | 56 | Content.ModelChanged -= new EventHandler(Content_ModelChanged);
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[4417] | 57 | Content.ProblemDataChanged -= new EventHandler(Content_ProblemDataChanged);
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| 58 | }
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| 59 |
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[5664] | 60 | private void Content_ModelChanged(object sender, EventArgs e) {
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[4417] | 61 | FillDataGridView();
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| 62 | }
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| 63 | private void Content_ProblemDataChanged(object sender, EventArgs e) {
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| 64 | UpdateDataGridView();
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| 65 | }
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| 66 |
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| 67 | protected override void OnContentChanged() {
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| 68 | base.OnContentChanged();
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| 69 | UpdateDataGridView();
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| 70 | }
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| 71 |
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| 72 | private void UpdateDataGridView() {
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| 73 | if (InvokeRequired) Invoke((Action)UpdateDataGridView);
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| 74 | else {
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| 75 | if (Content == null) {
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| 76 | dataGridView.RowCount = 1;
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| 77 | dataGridView.ColumnCount = 1;
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| 78 | } else {
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[6520] | 79 | dataGridView.ColumnCount = Content.ProblemData.Classes + 1;
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| 80 | dataGridView.RowCount = Content.ProblemData.Classes + 1;
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[4417] | 81 |
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| 82 | int i = 0;
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| 83 | foreach (string headerText in Content.ProblemData.ClassNames) {
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| 84 | dataGridView.Columns[i].HeaderText = "Actual " + headerText;
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| 85 | dataGridView.Rows[i].HeaderCell.Value = "Predicted " + headerText;
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| 86 | i++;
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| 87 | }
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[6520] | 88 | dataGridView.Columns[i].HeaderText = "Actual not classified";
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| 89 | dataGridView.Rows[i].HeaderCell.Value = "Predicted not classified";
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| 90 |
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[4417] | 91 | dataGridView.AutoResizeColumns(DataGridViewAutoSizeColumnsMode.ColumnHeader);
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| 92 | dataGridView.AutoResizeRowHeadersWidth(DataGridViewRowHeadersWidthSizeMode.AutoSizeToAllHeaders);
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| 93 |
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| 94 | FillDataGridView();
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| 95 | }
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| 96 | }
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| 97 | }
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| 98 |
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| 99 | private void FillDataGridView() {
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| 100 | if (InvokeRequired) Invoke((Action)FillDataGridView);
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| 101 | else {
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| 102 | if (Content == null) return;
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| 103 |
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[6520] | 104 | double[,] confusionMatrix = new double[Content.ProblemData.Classes + 1, Content.ProblemData.Classes + 1];
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[4469] | 105 | IEnumerable<int> rows;
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[4417] | 106 |
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[6239] | 107 | double[] predictedValues;
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[4417] | 108 | if (cmbSamples.SelectedItem.ToString() == TrainingSamples) {
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[8430] | 109 | rows = Content.ProblemData.TrainingIndices;
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[6239] | 110 | predictedValues = Content.EstimatedTrainingClassValues.ToArray();
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[4417] | 111 | } else if (cmbSamples.SelectedItem.ToString() == TestSamples) {
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[8430] | 112 | rows = Content.ProblemData.TestIndices;
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[6520] | 113 | predictedValues = Content.EstimatedTestClassValues.ToArray();
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[4417] | 114 | } else throw new InvalidOperationException();
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| 115 |
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[6740] | 116 | double[] targetValues = Content.ProblemData.Dataset.GetDoubleValues(Content.ProblemData.TargetVariable, rows).ToArray();
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[6239] | 117 |
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[4417] | 118 | Dictionary<double, int> classValueIndexMapping = new Dictionary<double, int>();
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| 119 | int index = 0;
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[5664] | 120 | foreach (double classValue in Content.ProblemData.ClassValues.OrderBy(x => x)) {
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[4417] | 121 | classValueIndexMapping.Add(classValue, index);
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| 122 | index++;
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| 123 | }
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| 124 |
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| 125 | for (int i = 0; i < targetValues.Length; i++) {
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| 126 | double targetValue = targetValues[i];
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| 127 | double predictedValue = predictedValues[i];
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[6520] | 128 | int targetIndex;
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| 129 | int predictedIndex;
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| 130 | if (!classValueIndexMapping.TryGetValue(targetValue, out targetIndex)) {
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| 131 | targetIndex = Content.ProblemData.Classes;
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| 132 | }
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| 133 | if (!classValueIndexMapping.TryGetValue(predictedValue, out predictedIndex)) {
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| 134 | predictedIndex = Content.ProblemData.Classes;
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| 135 | }
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[4417] | 136 |
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| 137 | confusionMatrix[predictedIndex, targetIndex] += 1;
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| 138 | }
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| 139 |
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| 140 | for (int row = 0; row < confusionMatrix.GetLength(0); row++) {
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| 141 | for (int col = 0; col < confusionMatrix.GetLength(1); col++) {
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| 142 | //TODO add scaling to relative values;
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| 143 | dataGridView[col, row].Value = confusionMatrix[row, col];
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| 144 | }
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| 145 | }
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| 146 | }
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| 147 | }
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| 148 |
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| 149 | private void cmbSamples_SelectedIndexChanged(object sender, System.EventArgs e) {
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| 150 | FillDataGridView();
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| 151 | }
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| 152 | }
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| 153 | }
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