Free cookie consent management tool by TermsFeed Policy Generator

source: addons/HeuristicLab.FitnessLandscapeAnalysis/HeuristicLab.Analysis.FitnessLandscape/Analysis/UpDownWalkAnalyzer.cs @ 17514

Last change on this file since 17514 was 16995, checked in by gkronber, 6 years ago

#2520 Update plugin dependencies and references for HL.FLA for new persistence

File size: 10.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
23using System.Linq;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Operators;
28using HeuristicLab.Optimization.Operators;
29using HeuristicLab.Parameters;
30using HEAL.Attic;
31
32namespace HeuristicLab.Analysis.FitnessLandscape.Analysis {
33
34  [StorableType("0D054A87-A040-4DC5-A722-0952EE96C924")]
35  public class UpDownWalkAnalyzer : AlgorithmOperator, IQualityTrailAnalyzer {
36    public bool EnabledByDefault {
37      get { return false; }
38    }
39
40    #region Parameters
41    public LookupParameter<DataTable> QualityTrailParameter {
42      get { return (LookupParameter<DataTable>)Parameters["Quality Trail"]; }
43    }
44    public LookupParameter<VariableCollection> ResultsParameter {
45      get { return (LookupParameter<VariableCollection>)Parameters["Results"]; }
46    }
47    public LookupParameter<DataTable> UpDownStepsParameter {
48      get { return (LookupParameter<DataTable>)Parameters["UpDownSteps"]; }
49    }
50    public LookupParameter<DataTable> UpDownLevelsParameter {
51      get { return (LookupParameter<DataTable>)Parameters["UpDownLevels"]; }
52    }
53    public LookupParameter<DoubleValue> UpWalkLengthParameter {
54      get { return (LookupParameter<DoubleValue>)Parameters["UpWalkLength"]; }
55    }
56    public LookupParameter<DoubleValue> DownWalkLengthParameter {
57      get { return (LookupParameter<DoubleValue>)Parameters["DownWalkLength"]; }
58    }
59    public LookupParameter<DoubleValue> UpWalkLenVarParameter {
60      get { return (LookupParameter<DoubleValue>)Parameters["UpWalkLenVar"]; }
61    }
62    public LookupParameter<DoubleValue> DownWalkLenVarParameter {
63      get { return (LookupParameter<DoubleValue>)Parameters["DownWalkLenVar"]; }
64    }
65    public LookupParameter<DoubleValue> UpperLevelParameter {
66      get { return (LookupParameter<DoubleValue>)Parameters["UpperLevel"]; }
67    }
68    public LookupParameter<DoubleValue> LowerLevelParameter {
69      get { return (LookupParameter<DoubleValue>)Parameters["LowerLevel"]; }
70    }
71    public LookupParameter<DoubleValue> UpperVarianceParameter {
72      get { return (LookupParameter<DoubleValue>)Parameters["UpperVariance"]; }
73    }
74    public LookupParameter<DoubleValue> LowerVarianceParameter {
75      get { return (LookupParameter<DoubleValue>)Parameters["LowerVariance"]; }
76    }
77    #endregion
78
79    [StorableConstructor]
80    protected UpDownWalkAnalyzer(StorableConstructorFlag _) : base(_) { }
81    protected UpDownWalkAnalyzer(UpDownWalkAnalyzer original, Cloner cloner) : base(original, cloner) { }
82
83    public UpDownWalkAnalyzer() {
84      Parameters.Add(new LookupParameter<DataTable>("Quality Trail", "The qualities of the solutions"));
85      Parameters.Add(new LookupParameter<VariableCollection>("Results", "The collection of all results of this algorithm"));
86      Parameters.Add(new LookupParameter<DataTable>("UpDownSteps", "Distribution of upward and downward steps between extremes."));
87      Parameters.Add(new LookupParameter<DataTable>("UpDownLevels", "Distribution of upper and lower levels in up-down walks."));
88      Parameters.Add(new LookupParameter<DoubleValue>("DownWalkLength", "Average downward walk length."));
89      Parameters.Add(new LookupParameter<DoubleValue>("UpWalkLength", "Average updward walk length."));
90      Parameters.Add(new LookupParameter<DoubleValue>("UpWalkLenVar", "Upward walk length variance."));
91      Parameters.Add(new LookupParameter<DoubleValue>("DownWalkLenVar", "Downward walk length variance."));
92      Parameters.Add(new LookupParameter<DoubleValue>("UpperLevel", "Average maximum fitness value."));
93      Parameters.Add(new LookupParameter<DoubleValue>("LowerLevel", "Average minimum fitness value."));
94      Parameters.Add(new LookupParameter<DoubleValue>("LowerVariance", "Lower level variance."));
95      Parameters.Add(new LookupParameter<DoubleValue>("UpperVariance", "Upper level variance."));
96   
97
98      var resultsCollector = new ResultsCollector();
99      resultsCollector.CollectedValues.Add(new LookupParameter<DataTable>(UpDownStepsParameter.Name));
100      resultsCollector.CollectedValues.Add(new LookupParameter<DataTable>(UpDownLevelsParameter.Name));
101      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(DownWalkLengthParameter.Name));
102      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(UpWalkLengthParameter.Name));
103      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(UpWalkLenVarParameter.Name));
104      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(DownWalkLenVarParameter.Name));
105      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(UpperLevelParameter.Name));
106      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(LowerLevelParameter.Name));
107      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(UpperVarianceParameter.Name));
108      resultsCollector.CollectedValues.Add(new LookupParameter<DoubleValue>(LowerVarianceParameter.Name));
109
110      OperatorGraph.InitialOperator = resultsCollector;
111      resultsCollector.Successor = null;
112    }
113
114    public override IDeepCloneable Clone(Cloner cloner) {
115      return new UpDownWalkAnalyzer(this, cloner);
116    }
117
118    public override IOperation Apply() {
119      var stepsTable = GetOrCreateTable(UpDownStepsParameter, "Up", "Down");
120      var levelsTable = GetOrCreateTable(UpDownLevelsParameter, "Top", "Bottom");
121      DataTable qualityTrail = QualityTrailParameter.ActualValue;
122      if (qualityTrail != null && qualityTrail.Rows.Count > 0) {
123        var qualities = qualityTrail.Rows.First().Values.ToList();
124        if (qualities.Count > 2) {
125          var extremes = qualities
126            .Delta((a, b) => new {a, b, diff = b - a})
127            .Select((p, i) => new {p.a, p.b, p.diff, i = i+1})
128            .Delta((s1, s2) => new {
129              s1.i,
130              value = s2.a,
131              top = s1.diff >= 0 && s2.diff < 0,
132              bottom = s1.diff <= 0 && s2.diff > 0
133            })
134            .Where(x => x.top || x.bottom)
135            .GroupConsecutive(x => x.bottom)
136            .Select(g => g.Count() == 1
137                           ? g.First()
138                           : (g.First().bottom
139                                ? g.OrderBy(x => x.value).First()
140                                : g.OrderByDescending(x => x.value).First())).ToList();
141          var maxima = extremes.Where(x => x.top).ToList();
142          var minima = extremes.Where(x => x.bottom).ToList();
143          var tops = Enumerable.Repeat(new {length = 0, value = 0.0}, 0).ToList();
144          var bottoms = tops;
145          if (maxima.Count > 0 && minima.Count > 0) {
146            if (maxima.First().i < minima.First().i) {
147              bottoms = maxima.Zip(minima, (t, b) => new {length = b.i - t.i, b.value}).ToList();
148              minima.Insert(0, new {i = -1, value = 0.0, top = false, bottom = false});
149              tops = maxima.Zip(minima, (t, b) => new {length = t.i - b.i, t.value}).ToList();
150            } else {
151              tops = maxima.Zip(minima, (t, b) => new {length = t.i - b.i, t.value}).ToList();
152              maxima.Insert(0, new {i = -1, value = 0.0, top = false, bottom = false});
153              bottoms = maxima.Zip(minima, (t, b) => new {length = b.i - t.i, b.value}).ToList();
154            }
155            if (tops.Count > 0) {
156              var topLengths = tops.Select(t => (double) t.length).ToList();
157              var topVals = tops.Select(t => t.value).ToList();
158              ReplaceHistogram(stepsTable.Rows["Up"], topLengths);
159              ReplaceHistogram(levelsTable.Rows["Top"], topVals);
160              UpperLevelParameter.ActualValue = new DoubleValue(topVals.Average());
161              UpperVarianceParameter.ActualValue = new DoubleValue(topVals.Variance());
162              UpWalkLengthParameter.ActualValue = new DoubleValue(topLengths.Average());
163              UpWalkLenVarParameter.ActualValue = new DoubleValue(topLengths.Variance());
164            }
165            if (bottoms.Count > 0) {
166              var bottomLengths = bottoms.Select(b => (double) b.length).ToList();
167              var bottomVals = bottoms.Select(b => b.value).ToList();
168              ReplaceHistogram(stepsTable.Rows["Down"], bottomLengths);
169              ReplaceHistogram(levelsTable.Rows["Bottom"], bottomVals);
170              LowerLevelParameter.ActualValue = new DoubleValue(bottomVals.Average());
171              LowerVarianceParameter.ActualValue = new DoubleValue(bottomVals.Variance());
172              DownWalkLengthParameter.ActualValue = new DoubleValue(bottomLengths.Average());
173              DownWalkLenVarParameter.ActualValue = new DoubleValue(bottomLengths.Variance());
174            }
175          }
176        }
177      }
178      return base.Apply();
179    }
180
181    private void ReplaceHistogram(DataRow row, IEnumerable<double> values) {
182      row.VisualProperties.ChartType = DataRowVisualProperties.DataRowChartType.Histogram;
183      row.Values.Clear();
184      row.Values.AddRange(values);
185    }
186
187    private DataTable GetOrCreateTable(LookupParameter<DataTable> tableParameter, params string[] rowNames) {
188      DataTable table = tableParameter.ActualValue;
189      if (table == null) {
190        table = new DataTable(tableParameter.Name, tableParameter.Description) {
191          VisualProperties = { HistogramBins = 25 }
192        };
193        tableParameter.ActualValue = table;
194        foreach (var name in rowNames) {
195          table.Rows.Add(new DataRow(name));
196        }
197      }
198      return table;
199    }
200  }
201}
Note: See TracBrowser for help on using the repository browser.