[10539] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[16565] | 3 | * Copyright (C) 2002-2019 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[10539] | 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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[10236] | 23 | using System.Collections.Generic;
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[10246] | 24 | using System.Drawing;
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[11002] | 25 | using System.Linq;
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[10246] | 26 | using HeuristicLab.Common;
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[10239] | 27 | using HeuristicLab.Core;
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[13514] | 28 | using HeuristicLab.Data;
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[16565] | 29 | using HEAL.Attic;
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[15518] | 30 | using HeuristicLab.Random;
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[10236] | 31 |
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| 32 | namespace HeuristicLab.DataPreprocessing {
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[15110] | 33 | [Item("Data Grid", "Represents a data grid.")]
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[16565] | 34 | [StorableType("DC6AE5CE-B0FA-4C8C-BDBB-D490C6DE4174")]
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[15518] | 35 | public class DataGridContent : PreprocessingContent, IStringConvertibleMatrix, IViewShortcut {
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[10999] | 36 | public static new Image StaticItemImage {
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| 37 | get { return HeuristicLab.Common.Resources.VSImageLibrary.Table; }
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| 38 | }
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| 39 |
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[10236] | 40 | public int Rows {
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[15518] | 41 | get { return PreprocessingData.Rows; }
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[15110] | 42 | set { }
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[10236] | 43 | }
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| 44 |
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| 45 | public int Columns {
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[15518] | 46 | get { return PreprocessingData.Columns; }
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[15110] | 47 | set { }
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[10236] | 48 | }
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| 49 |
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| 50 | public IEnumerable<string> ColumnNames {
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[15518] | 51 | get { return PreprocessingData.VariableNames; }
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[15110] | 52 | set { }
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[10236] | 53 | }
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| 54 |
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| 55 | public IEnumerable<string> RowNames {
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[15110] | 56 | get { return Enumerable.Range(1, Rows).Select(n => n.ToString()); }
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| 57 | set { throw new NotSupportedException(); }
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[10236] | 58 | }
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| 59 |
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| 60 | public bool SortableView {
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[15110] | 61 | get { return true; }
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| 62 | set { throw new NotSupportedException(); }
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[10236] | 63 | }
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| 64 |
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| 65 | public bool ReadOnly {
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[10312] | 66 | get { return false; }
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[10236] | 67 | }
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| 68 |
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[11002] | 69 | public IDictionary<int, IList<int>> Selection {
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[15518] | 70 | get { return PreprocessingData.Selection; }
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| 71 | set { PreprocessingData.Selection = value; }
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[11002] | 72 | }
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| 73 |
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[15518] | 74 | #region Constructor, Cloning & Persistence
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| 75 | public DataGridContent(IFilteredPreprocessingData preprocessingData)
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| 76 | : base(preprocessingData) {
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[10236] | 77 | }
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| 78 |
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[15518] | 79 | public DataGridContent(DataGridContent original, Cloner cloner)
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| 80 | : base(original, cloner) {
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[10964] | 81 | }
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| 82 | public override IDeepCloneable Clone(Cloner cloner) {
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| 83 | return new DataGridContent(this, cloner);
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| 84 | }
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| 85 |
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[15518] | 86 | [StorableConstructor]
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[16565] | 87 | protected DataGridContent(StorableConstructorFlag _) : base(_) { }
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[15518] | 88 | #endregion
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| 89 |
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[12676] | 90 | public void DeleteRows(IEnumerable<int> rows) {
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[15518] | 91 | PreprocessingData.DeleteRowsWithIndices(rows);
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[11002] | 92 | }
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| 93 |
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[12676] | 94 | public void DeleteColumn(int column) {
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[15518] | 95 | PreprocessingData.DeleteColumn(column);
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[12676] | 96 | }
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| 97 |
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[11002] | 98 | public bool Validate(string value, out string errorMessage, int columnIndex) {
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[15518] | 99 | return PreprocessingData.Validate(value, out errorMessage, columnIndex);
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[11002] | 100 | }
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| 101 |
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[10236] | 102 | public string GetValue(int rowIndex, int columnIndex) {
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[15518] | 103 | return PreprocessingData.GetCellAsString(columnIndex, rowIndex);
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[10236] | 104 | }
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| 105 |
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[10629] | 106 | public bool SetValue(string value, int rowIndex, int columnIndex) {
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[15518] | 107 | return PreprocessingData.SetValue(value, columnIndex, rowIndex);
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[10236] | 108 | }
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| 109 |
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[10964] | 110 | public event DataPreprocessingChangedEventHandler Changed {
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[15518] | 111 | add { PreprocessingData.Changed += value; }
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| 112 | remove { PreprocessingData.Changed -= value; }
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[10964] | 113 | }
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| 114 |
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| 115 | #region unused stuff/not implemented but necessary due to IStringConvertibleMatrix
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[11070] | 116 | #pragma warning disable 0067
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[10964] | 117 | // Is not used since DataGridContentView overrides dataGridView_CellValidating and uses
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| 118 | // DataGridLogic#Validate(string value, out string errorMessage, int columnIndex)
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| 119 | public bool Validate(string value, out string errorMessage) {
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| 120 | errorMessage = string.Empty;
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| 121 | return true;
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| 122 | }
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| 123 |
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[10236] | 124 | public event EventHandler ColumnsChanged;
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| 125 | public event EventHandler RowsChanged;
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| 126 | public event EventHandler ColumnNamesChanged;
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| 127 | public event EventHandler RowNamesChanged;
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| 128 | public event EventHandler SortableViewChanged;
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[10246] | 129 | public event EventHandler<EventArgs<int, int>> ItemChanged;
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[10236] | 130 | public event EventHandler Reset;
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[11070] | 131 | #pragma warning restore 0067
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[10964] | 132 | #endregion
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[15518] | 133 |
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| 134 | #region Manipulations
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| 135 | private void ReplaceIndicesByValue(IDictionary<int, IList<int>> cells, Func<int, double> doubleAggregator = null,
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| 136 | Func<int, DateTime> dateTimeAggregator = null, Func<int, string> stringAggregator = null) {
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| 137 | PreprocessingData.InTransaction(() => {
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| 138 | foreach (var column in cells) {
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| 139 | if (doubleAggregator != null && PreprocessingData.VariableHasType<double>(column.Key)) {
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| 140 | var value = doubleAggregator(column.Key);
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| 141 | foreach (int index in column.Value)
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| 142 | PreprocessingData.SetCell<double>(column.Key, index, value);
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| 143 | } else if (dateTimeAggregator != null && PreprocessingData.VariableHasType<DateTime>(column.Key)) {
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| 144 | var value = dateTimeAggregator(column.Key);
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| 145 | foreach (int index in column.Value)
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| 146 | PreprocessingData.SetCell<DateTime>(column.Key, index, value);
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| 147 | } else if (stringAggregator != null && PreprocessingData.VariableHasType<string>(column.Key)) {
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| 148 | var value = stringAggregator(column.Key);
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| 149 | foreach (int index in column.Value)
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| 150 | PreprocessingData.SetCell<string>(column.Key, index, value);
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| 151 | }
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| 152 | }
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| 153 | });
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| 154 | }
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| 155 |
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| 156 | private void ReplaceIndicesByValues(IDictionary<int, IList<int>> cells, Func<int, IEnumerable<double>> doubleAggregator = null,
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| 157 | Func<int, IEnumerable<DateTime>> dateTimeAggregator = null, Func<int, IEnumerable<string>> stringAggregator = null) {
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| 158 | PreprocessingData.InTransaction(() => {
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| 159 | foreach (var column in cells) {
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| 160 | if (doubleAggregator != null && PreprocessingData.VariableHasType<double>(column.Key)) {
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| 161 | var values = doubleAggregator(column.Key);
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| 162 | foreach (var pair in column.Value.Zip(values, (row, value) => new { row, value }))
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| 163 | PreprocessingData.SetCell<double>(column.Key, pair.row, pair.value);
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| 164 | } else if (dateTimeAggregator != null && PreprocessingData.VariableHasType<DateTime>(column.Key)) {
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| 165 | var values = dateTimeAggregator(column.Key);
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| 166 | foreach (var pair in column.Value.Zip(values, (row, value) => new { row, value }))
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| 167 | PreprocessingData.SetCell<DateTime>(column.Key, pair.row, pair.value);
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| 168 | } else if (stringAggregator != null && PreprocessingData.VariableHasType<string>(column.Key)) {
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| 169 | var values = stringAggregator(column.Key);
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| 170 | foreach (var pair in column.Value.Zip(values, (row, value) => new { row, value }))
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| 171 | PreprocessingData.SetCell<string>(column.Key, pair.row, pair.value);
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| 172 | }
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| 173 | }
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| 174 | });
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| 175 | }
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| 176 |
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| 177 | public void ReplaceIndicesByMean(IDictionary<int, IList<int>> cells, bool considerSelection = false) {
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| 178 | ReplaceIndicesByValue(cells,
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| 179 | col => PreprocessingData.GetMean<double>(col, considerSelection),
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| 180 | col => PreprocessingData.GetMean<DateTime>(col, considerSelection));
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| 181 | }
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| 182 |
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| 183 | public void ReplaceIndicesByMedianValue(IDictionary<int, IList<int>> cells, bool considerSelection = false) {
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| 184 | ReplaceIndicesByValue(cells,
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| 185 | col => PreprocessingData.GetMedian<double>(col, considerSelection),
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| 186 | col => PreprocessingData.GetMedian<DateTime>(col, considerSelection));
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| 187 | }
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| 188 |
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| 189 | public void ReplaceIndicesByMode(IDictionary<int, IList<int>> cells, bool considerSelection = false) {
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| 190 | ReplaceIndicesByValue(cells,
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| 191 | col => PreprocessingData.GetMode<double>(col, considerSelection),
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| 192 | col => PreprocessingData.GetMode<DateTime>(col, considerSelection),
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| 193 | col => PreprocessingData.GetMode<string>(col, considerSelection));
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| 194 | }
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| 195 |
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| 196 | public void ReplaceIndicesByRandomValue(IDictionary<int, IList<int>> cells, bool considerSelection = false) {
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| 197 | var rand = new FastRandom();
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| 198 | ReplaceIndicesByValues(cells,
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| 199 | col => {
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| 200 | double min = PreprocessingData.GetMin<double>(col, considerSelection);
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| 201 | double max = PreprocessingData.GetMax<double>(col, considerSelection);
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| 202 | double range = max - min;
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| 203 | return cells[col].Select(_ => rand.NextDouble() * range + min);
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| 204 | },
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| 205 | col => {
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| 206 | var min = PreprocessingData.GetMin<DateTime>(col, considerSelection);
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| 207 | var max = PreprocessingData.GetMax<DateTime>(col, considerSelection);
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| 208 | double range = (max - min).TotalSeconds;
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| 209 | return cells[col].Select(_ => min + TimeSpan.FromSeconds(rand.NextDouble() * range));
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| 210 | });
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| 211 | }
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| 212 |
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| 213 | public void ReplaceIndicesByString(IDictionary<int, IList<int>> cells, string value) {
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| 214 | PreprocessingData.InTransaction(() => {
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| 215 | foreach (var column in cells) {
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| 216 | foreach (var rowIdx in column.Value) {
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| 217 | PreprocessingData.SetValue(value, column.Key, rowIdx);
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| 218 | }
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| 219 | }
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| 220 | });
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| 221 | }
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| 222 |
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| 223 |
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| 224 | public void ReplaceIndicesByLinearInterpolationOfNeighbours(IDictionary<int, IList<int>> cells) {
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| 225 | PreprocessingData.InTransaction(() => {
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| 226 | foreach (var column in cells) {
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| 227 | IList<Tuple<int, int>> startEndings = GetStartAndEndingsForInterpolation(column);
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| 228 | foreach (var tuple in startEndings) {
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| 229 | Interpolate(column, tuple.Item1, tuple.Item2);
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| 230 | }
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| 231 | }
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| 232 | });
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| 233 | }
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| 234 |
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| 235 | private List<Tuple<int, int>> GetStartAndEndingsForInterpolation(KeyValuePair<int, IList<int>> column) {
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| 236 | var startEndings = new List<Tuple<int, int>>();
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| 237 | var rowIndices = column.Value.OrderBy(x => x).ToList();
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| 238 | var count = rowIndices.Count;
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| 239 | int start = int.MinValue;
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| 240 | for (int i = 0; i < count; ++i) {
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| 241 | if (start == int.MinValue) {
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| 242 | start = IndexOfPrevPresentValue(column.Key, rowIndices[i]);
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| 243 | }
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| 244 | if (i + 1 == count || (i + 1 < count && rowIndices[i + 1] - rowIndices[i] > 1)) {
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| 245 | int next = IndexOfNextPresentValue(column.Key, rowIndices[i]);
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| 246 | if (start > 0 && next < PreprocessingData.Rows) {
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| 247 | startEndings.Add(new Tuple<int, int>(start, next));
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| 248 | }
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| 249 | start = int.MinValue;
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| 250 | }
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| 251 | }
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| 252 | return startEndings;
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| 253 | }
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| 254 |
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| 255 | private void Interpolate(KeyValuePair<int, IList<int>> column, int prevIndex, int nextIndex) {
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| 256 | int valuesToInterpolate = nextIndex - prevIndex;
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| 257 |
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| 258 | if (PreprocessingData.VariableHasType<double>(column.Key)) {
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| 259 | double prev = PreprocessingData.GetCell<double>(column.Key, prevIndex);
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| 260 | double next = PreprocessingData.GetCell<double>(column.Key, nextIndex);
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| 261 | double interpolationStep = (next - prev) / valuesToInterpolate;
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| 262 |
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| 263 | for (int i = prevIndex; i < nextIndex; ++i) {
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| 264 | double interpolated = prev + (interpolationStep * (i - prevIndex));
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| 265 | PreprocessingData.SetCell<double>(column.Key, i, interpolated);
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| 266 | }
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| 267 | } else if (PreprocessingData.VariableHasType<DateTime>(column.Key)) {
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| 268 | DateTime prev = PreprocessingData.GetCell<DateTime>(column.Key, prevIndex);
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| 269 | DateTime next = PreprocessingData.GetCell<DateTime>(column.Key, nextIndex);
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| 270 | double interpolationStep = (next - prev).TotalSeconds / valuesToInterpolate;
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| 271 |
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| 272 | for (int i = prevIndex; i < nextIndex; ++i) {
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| 273 | DateTime interpolated = prev.AddSeconds(interpolationStep * (i - prevIndex));
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| 274 | PreprocessingData.SetCell<DateTime>(column.Key, i, interpolated);
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| 275 | }
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| 276 | }
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| 277 | }
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| 278 |
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| 279 | private int IndexOfPrevPresentValue(int columnIndex, int start) {
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| 280 | int offset = start - 1;
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| 281 | while (offset >= 0 && PreprocessingData.IsCellEmpty(columnIndex, offset)) {
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| 282 | offset--;
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| 283 | }
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| 284 |
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| 285 | return offset;
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| 286 | }
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| 287 |
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| 288 | private int IndexOfNextPresentValue(int columnIndex, int start) {
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| 289 | int offset = start + 1;
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| 290 | while (offset < PreprocessingData.Rows && PreprocessingData.IsCellEmpty(columnIndex, offset)) {
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| 291 | offset++;
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| 292 | }
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| 293 |
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| 294 | return offset;
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| 295 | }
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| 296 |
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| 297 | public void Shuffle(bool shuffleRangesSeparately) {
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| 298 | var random = new FastRandom();
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| 299 |
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| 300 | if (shuffleRangesSeparately) {
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| 301 | var ranges = new[] { PreprocessingData.TestPartition, PreprocessingData.TrainingPartition };
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| 302 | PreprocessingData.InTransaction(() => {
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| 303 | // process all given ranges - e.g. TrainingPartition, TestPartition
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| 304 | foreach (IntRange range in ranges) {
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| 305 | var indices = Enumerable.Range(0, PreprocessingData.Rows).ToArray();
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| 306 | var shuffledIndices = Enumerable.Range(range.Start, range.Size).Shuffle(random).ToArray();
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| 307 | for (int i = range.Start, j = 0; i < range.End; i++, j++)
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| 308 | indices[i] = shuffledIndices[j];
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| 309 |
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| 310 | ReOrderToIndices(indices);
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| 311 | }
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| 312 | });
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| 313 |
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| 314 | } else {
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| 315 | PreprocessingData.InTransaction(() => {
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| 316 | var indices = Enumerable.Range(0, PreprocessingData.Rows).ToArray();
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| 317 | indices.ShuffleInPlace(random);
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| 318 | ReOrderToIndices(indices);
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| 319 | });
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| 320 | }
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| 321 | }
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| 322 |
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| 323 | public void ReOrderToIndices(int[] indices) {
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| 324 | PreprocessingData.InTransaction(() => {
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| 325 | for (int i = 0; i < PreprocessingData.Columns; ++i) {
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| 326 | if (PreprocessingData.VariableHasType<double>(i))
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| 327 | ReOrderToIndices<double>(i, indices);
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| 328 | else if (PreprocessingData.VariableHasType<string>(i))
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| 329 | ReOrderToIndices<string>(i, indices);
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| 330 | else if (PreprocessingData.VariableHasType<DateTime>(i))
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| 331 | ReOrderToIndices<DateTime>(i, indices);
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| 332 | }
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| 333 | });
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| 334 | }
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| 335 |
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| 336 | private void ReOrderToIndices<T>(int columnIndex, int[] indices) {
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| 337 | var originalData = new List<T>(PreprocessingData.GetValues<T>(columnIndex));
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| 338 | if (indices.Length != originalData.Count) throw new InvalidOperationException("The number of provided indices does not match the values.");
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| 339 |
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| 340 | for (int i = 0; i < indices.Length; i++) {
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| 341 | T newValue = originalData[indices[i]];
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| 342 | PreprocessingData.SetCell<T>(columnIndex, i, newValue);
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| 343 | }
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| 344 | }
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| 345 | #endregion
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[10236] | 346 | }
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| 347 | }
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