1 | using System;
|
---|
2 | using System.Collections.Generic;
|
---|
3 | using System.Linq;
|
---|
4 | using System.Threading;
|
---|
5 | using HeuristicLab.Algorithms.DataAnalysis.SymRegGrammarEnumeration.GrammarEnumeration;
|
---|
6 | using HeuristicLab.Collections;
|
---|
7 | using HeuristicLab.Common;
|
---|
8 | using HeuristicLab.Core;
|
---|
9 | using HeuristicLab.Data;
|
---|
10 | using HeuristicLab.Optimization;
|
---|
11 | using HeuristicLab.Parameters;
|
---|
12 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
13 | using HeuristicLab.Problems.DataAnalysis;
|
---|
14 |
|
---|
15 | namespace HeuristicLab.Algorithms.DataAnalysis.SymRegGrammarEnumeration {
|
---|
16 | [Item("Grammar Enumeration Symbolic Regression", "Iterates all possible model structures for a fixed grammar.")]
|
---|
17 | [StorableClass]
|
---|
18 | [Creatable(CreatableAttribute.Categories.DataAnalysisRegression, Priority = 250)]
|
---|
19 | public class GrammarEnumerationAlgorithm : FixedDataAnalysisAlgorithm<IRegressionProblem> {
|
---|
20 | #region properties and result names
|
---|
21 | private readonly string SearchStructureSizeName = "Search Structure Size";
|
---|
22 | private readonly string GeneratedPhrasesName = "Generated/Archived Phrases";
|
---|
23 | private readonly string GeneratedSentencesName = "Generated Sentences";
|
---|
24 | private readonly string DistinctSentencesName = "Distinct Sentences";
|
---|
25 | private readonly string PhraseExpansionsName = "Phrase Expansions";
|
---|
26 | private readonly string AverageSentenceComplexityName = "Avg. Sentence Complexity among Distinct";
|
---|
27 | private readonly string OverwrittenSentencesName = "Sentences overwritten";
|
---|
28 | private readonly string AnalyzersParameterName = "Analyzers";
|
---|
29 | private readonly string ExpansionsPerSecondName = "Expansions per second";
|
---|
30 |
|
---|
31 |
|
---|
32 | private readonly string OptimizeConstantsParameterName = "Optimize Constants";
|
---|
33 | private readonly string ErrorWeightParameterName = "Error Weight";
|
---|
34 | private readonly string SearchDataStructureParameterName = "Search Data Structure";
|
---|
35 | private readonly string MaxComplexityParameterName = "Max. Complexity";
|
---|
36 | private readonly string GuiUpdateIntervalParameterName = "GUI Update Interval";
|
---|
37 | private readonly string GrammarSymbolsParameterName = "Grammar Symbols";
|
---|
38 |
|
---|
39 | public override bool SupportsPause { get { return false; } }
|
---|
40 |
|
---|
41 | protected IValueParameter<BoolValue> OptimizeConstantsParameter {
|
---|
42 | get { return (IValueParameter<BoolValue>)Parameters[OptimizeConstantsParameterName]; }
|
---|
43 | }
|
---|
44 |
|
---|
45 | public bool OptimizeConstants {
|
---|
46 | get { return OptimizeConstantsParameter.Value.Value; }
|
---|
47 | set { OptimizeConstantsParameter.Value.Value = value; }
|
---|
48 | }
|
---|
49 |
|
---|
50 | protected IValueParameter<IntValue> MaxComplexityParameter {
|
---|
51 | get { return (IValueParameter<IntValue>)Parameters[MaxComplexityParameterName]; }
|
---|
52 | }
|
---|
53 | public int MaxComplexity {
|
---|
54 | get { return MaxComplexityParameter.Value.Value; }
|
---|
55 | set { MaxComplexityParameter.Value.Value = value; }
|
---|
56 | }
|
---|
57 |
|
---|
58 | protected IValueParameter<DoubleValue> ErrorWeightParameter {
|
---|
59 | get { return (IValueParameter<DoubleValue>)Parameters[ErrorWeightParameterName]; }
|
---|
60 | }
|
---|
61 | public double ErrorWeight {
|
---|
62 | get { return ErrorWeightParameter.Value.Value; }
|
---|
63 | set { ErrorWeightParameter.Value.Value = value; }
|
---|
64 | }
|
---|
65 |
|
---|
66 | protected IValueParameter<IntValue> GuiUpdateIntervalParameter {
|
---|
67 | get { return (IValueParameter<IntValue>)Parameters[GuiUpdateIntervalParameterName]; }
|
---|
68 | }
|
---|
69 | public int GuiUpdateInterval {
|
---|
70 | get { return GuiUpdateIntervalParameter.Value.Value; }
|
---|
71 | set { GuiUpdateIntervalParameter.Value.Value = value; }
|
---|
72 | }
|
---|
73 |
|
---|
74 | protected IValueParameter<EnumValue<StorageType>> SearchDataStructureParameter {
|
---|
75 | get { return (IValueParameter<EnumValue<StorageType>>)Parameters[SearchDataStructureParameterName]; }
|
---|
76 | }
|
---|
77 | public StorageType SearchDataStructure {
|
---|
78 | get { return SearchDataStructureParameter.Value.Value; }
|
---|
79 | set { SearchDataStructureParameter.Value.Value = value; }
|
---|
80 | }
|
---|
81 |
|
---|
82 | public IFixedValueParameter<ReadOnlyCheckedItemCollection<IGrammarEnumerationAnalyzer>> AnalyzersParameter {
|
---|
83 | get { return (IFixedValueParameter<ReadOnlyCheckedItemCollection<IGrammarEnumerationAnalyzer>>)Parameters[AnalyzersParameterName]; }
|
---|
84 | }
|
---|
85 |
|
---|
86 | public ICheckedItemCollection<IGrammarEnumerationAnalyzer> Analyzers {
|
---|
87 | get { return AnalyzersParameter.Value; }
|
---|
88 | }
|
---|
89 |
|
---|
90 | public IFixedValueParameter<ReadOnlyCheckedItemCollection<EnumValue<GrammarRule>>> GrammarSymbolsParameter {
|
---|
91 | get { return (IFixedValueParameter<ReadOnlyCheckedItemCollection<EnumValue<GrammarRule>>>)Parameters[GrammarSymbolsParameterName]; }
|
---|
92 | }
|
---|
93 |
|
---|
94 | public ReadOnlyCheckedItemCollection<EnumValue<GrammarRule>> GrammarSymbols {
|
---|
95 | get { return GrammarSymbolsParameter.Value; }
|
---|
96 | }
|
---|
97 |
|
---|
98 | public SymbolString BestTrainingSentence { get; set; } // Currently set in RSquaredEvaluator: quite hacky, but makes testing much easier for now...
|
---|
99 | #endregion
|
---|
100 |
|
---|
101 | public Dictionary<int, int> DistinctSentencesComplexity { get; private set; } // Semantically distinct sentences and their length in a run.
|
---|
102 | public HashSet<int> ArchivedPhrases { get; private set; }
|
---|
103 | internal SearchDataStore OpenPhrases { get; private set; } // Stack/Queue/etc. for fetching the next node in the search tree.
|
---|
104 |
|
---|
105 | #region execution stats
|
---|
106 | public int AllGeneratedSentencesCount { get; private set; }
|
---|
107 |
|
---|
108 | public int OverwrittenSentencesCount { get; private set; } // It is not guaranteed that shorter solutions are found first.
|
---|
109 | // When longer solutions are overwritten with shorter ones,
|
---|
110 | // this counter is increased.
|
---|
111 | public int PhraseExpansionCount { get; private set; } // Number, how many times a nonterminal symbol is replaced with a production rule.
|
---|
112 | #endregion
|
---|
113 |
|
---|
114 | public Grammar Grammar { get; private set; }
|
---|
115 |
|
---|
116 |
|
---|
117 | #region ctors
|
---|
118 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
119 | return new GrammarEnumerationAlgorithm(this, cloner);
|
---|
120 | }
|
---|
121 |
|
---|
122 | public GrammarEnumerationAlgorithm() {
|
---|
123 | Problem = new RegressionProblem() {
|
---|
124 | ProblemData = new HeuristicLab.Problems.Instances.DataAnalysis.PolyTen(seed: 1234).GenerateRegressionData()
|
---|
125 | };
|
---|
126 |
|
---|
127 | Parameters.Add(new ValueParameter<BoolValue>(OptimizeConstantsParameterName, "Run constant optimization in sentence evaluation.", new BoolValue(false)));
|
---|
128 | Parameters.Add(new ValueParameter<DoubleValue>(ErrorWeightParameterName, "Defines, how much weight is put on a phrase's r² value when priorizing phrases during search.", new DoubleValue(0.8)));
|
---|
129 | Parameters.Add(new ValueParameter<IntValue>(MaxComplexityParameterName, "The maximum number of variable symbols in a sentence.", new IntValue(12)));
|
---|
130 | Parameters.Add(new ValueParameter<IntValue>(GuiUpdateIntervalParameterName, "Number of generated sentences, until GUI is refreshed.", new IntValue(5000)));
|
---|
131 | Parameters.Add(new ValueParameter<EnumValue<StorageType>>(SearchDataStructureParameterName, new EnumValue<StorageType>(StorageType.PriorityQueue)));
|
---|
132 |
|
---|
133 | var availableAnalyzers = new IGrammarEnumerationAnalyzer[] {
|
---|
134 | new SearchGraphVisualizer(),
|
---|
135 | new SentenceLogger(),
|
---|
136 | new RSquaredEvaluator()
|
---|
137 | };
|
---|
138 | Parameters.Add(new FixedValueParameter<ReadOnlyCheckedItemCollection<IGrammarEnumerationAnalyzer>>(
|
---|
139 | AnalyzersParameterName,
|
---|
140 | new CheckedItemCollection<IGrammarEnumerationAnalyzer>(availableAnalyzers).AsReadOnly()));
|
---|
141 |
|
---|
142 | foreach (var analyzer in Analyzers) {
|
---|
143 | Analyzers.SetItemCheckedState(analyzer, false);
|
---|
144 | }
|
---|
145 | Analyzers.SetItemCheckedState(Analyzers.First(analyzer => analyzer is RSquaredEvaluator), true);
|
---|
146 | //Analyzers.SetItemCheckedState(Analyzers.First(analyzer => analyzer is SentenceLogger), true);
|
---|
147 |
|
---|
148 | var grammarSymbols = Enum.GetValues(typeof(GrammarRule))
|
---|
149 | .Cast<GrammarRule>()
|
---|
150 | .Select(v => new EnumValue<GrammarRule>(v));
|
---|
151 |
|
---|
152 | Parameters.Add(new FixedValueParameter<ReadOnlyCheckedItemCollection<EnumValue<GrammarRule>>>(
|
---|
153 | GrammarSymbolsParameterName,
|
---|
154 | new ReadOnlyCheckedItemCollection<EnumValue<GrammarRule>>(new CheckedItemCollection<EnumValue<GrammarRule>>(grammarSymbols))
|
---|
155 | ));
|
---|
156 | foreach (EnumValue<GrammarRule> grammarSymbol in GrammarSymbols) {
|
---|
157 | GrammarSymbols.SetItemCheckedState(grammarSymbol, true);
|
---|
158 | }
|
---|
159 | }
|
---|
160 |
|
---|
161 | public GrammarEnumerationAlgorithm(GrammarEnumerationAlgorithm original, Cloner cloner) : base(original, cloner) {
|
---|
162 | }
|
---|
163 | #endregion
|
---|
164 |
|
---|
165 | protected override void Run(CancellationToken cancellationToken) {
|
---|
166 | #region init
|
---|
167 | InitResults();
|
---|
168 |
|
---|
169 | foreach (IGrammarEnumerationAnalyzer grammarEnumerationAnalyzer in Analyzers) {
|
---|
170 | if (Analyzers.ItemChecked(grammarEnumerationAnalyzer)) {
|
---|
171 | grammarEnumerationAnalyzer.Register(this);
|
---|
172 | } else {
|
---|
173 | grammarEnumerationAnalyzer.Deregister(this);
|
---|
174 | }
|
---|
175 | }
|
---|
176 |
|
---|
177 | Analyzers.OfType<RSquaredEvaluator>().First().OptimizeConstants = OptimizeConstants;
|
---|
178 |
|
---|
179 | ArchivedPhrases = new HashSet<int>();
|
---|
180 |
|
---|
181 | DistinctSentencesComplexity = new Dictionary<int, int>();
|
---|
182 | AllGeneratedSentencesCount = 0;
|
---|
183 | OverwrittenSentencesCount = 0;
|
---|
184 | PhraseExpansionCount = 0;
|
---|
185 |
|
---|
186 | Grammar = new Grammar(Problem.ProblemData.AllowedInputVariables.ToArray(), GrammarSymbols.CheckedItems.Select(v => v.Value));
|
---|
187 |
|
---|
188 | OpenPhrases = new SearchDataStore(SearchDataStructure); // Select search strategy
|
---|
189 | var phrase0 = new SymbolString(new[] { Grammar.StartSymbol });
|
---|
190 | var phrase0Hash = Grammar.Hasher.CalcHashCode(phrase0);
|
---|
191 | #endregion
|
---|
192 |
|
---|
193 | int maxSentenceLength = GetMaxSentenceLength();
|
---|
194 |
|
---|
195 | OpenPhrases.Store(new SearchNode(phrase0Hash, 0.0, 0.0, phrase0));
|
---|
196 | while (OpenPhrases.Count > 0) {
|
---|
197 | if (cancellationToken.IsCancellationRequested) break;
|
---|
198 |
|
---|
199 | SearchNode fetchedSearchNode = OpenPhrases.GetNext();
|
---|
200 | SymbolString currPhrase = fetchedSearchNode.SymbolString;
|
---|
201 |
|
---|
202 | OnPhraseFetched(fetchedSearchNode.Hash, currPhrase);
|
---|
203 |
|
---|
204 | ArchivedPhrases.Add(fetchedSearchNode.Hash);
|
---|
205 |
|
---|
206 | // expand next nonterminal symbols
|
---|
207 | int nonterminalSymbolIndex = currPhrase.NextNonterminalIndex();
|
---|
208 | NonterminalSymbol expandedSymbol = (NonterminalSymbol)currPhrase[nonterminalSymbolIndex];
|
---|
209 | var appliedProductions = Grammar.Productions[expandedSymbol];
|
---|
210 |
|
---|
211 | for (int i = 0; i < appliedProductions.Count; i++) {
|
---|
212 | PhraseExpansionCount++;
|
---|
213 |
|
---|
214 | SymbolString newPhrase = currPhrase.DerivePhrase(nonterminalSymbolIndex, appliedProductions[i]);
|
---|
215 | int newPhraseComplexity = Grammar.GetComplexity(newPhrase);
|
---|
216 |
|
---|
217 | if (newPhraseComplexity <= MaxComplexity) {
|
---|
218 | var phraseHash = Grammar.Hasher.CalcHashCode(newPhrase);
|
---|
219 |
|
---|
220 | OnPhraseDerived(fetchedSearchNode.Hash, fetchedSearchNode.SymbolString, phraseHash, newPhrase, expandedSymbol, appliedProductions[i]);
|
---|
221 |
|
---|
222 | if (newPhrase.IsSentence()) {
|
---|
223 | AllGeneratedSentencesCount++;
|
---|
224 |
|
---|
225 | OnSentenceGenerated(fetchedSearchNode.Hash, fetchedSearchNode.SymbolString, phraseHash, newPhrase, expandedSymbol, appliedProductions[i]);
|
---|
226 |
|
---|
227 | // Is the best solution found? (only if RSquaredEvaluator is activated)
|
---|
228 | if (Results.ContainsKey(RSquaredEvaluator.BestTrainingQualityResultName)) {
|
---|
229 | double r2 = ((DoubleValue)Results[RSquaredEvaluator.BestTrainingQualityResultName].Value).Value;
|
---|
230 | if (r2.IsAlmost(1.0)) {
|
---|
231 | UpdateView(force: true);
|
---|
232 | return;
|
---|
233 | }
|
---|
234 | }
|
---|
235 |
|
---|
236 | if (!DistinctSentencesComplexity.ContainsKey(phraseHash) || DistinctSentencesComplexity[phraseHash] > newPhraseComplexity) {
|
---|
237 | if (DistinctSentencesComplexity.ContainsKey(phraseHash)) OverwrittenSentencesCount++; // for analysis only
|
---|
238 |
|
---|
239 | DistinctSentencesComplexity[phraseHash] = newPhraseComplexity;
|
---|
240 | OnDistinctSentenceGenerated(fetchedSearchNode.Hash, fetchedSearchNode.SymbolString, phraseHash, newPhrase, expandedSymbol, appliedProductions[i]);
|
---|
241 | }
|
---|
242 | UpdateView();
|
---|
243 |
|
---|
244 | } else if (!OpenPhrases.Contains(phraseHash) && !ArchivedPhrases.Contains(phraseHash)) {
|
---|
245 |
|
---|
246 | double r2 = GetR2(newPhrase, fetchedSearchNode.R2);
|
---|
247 | double phrasePriority = GetPriority(newPhrase, r2, maxSentenceLength);
|
---|
248 |
|
---|
249 | SearchNode newSearchNode = new SearchNode(phraseHash, phrasePriority, r2, newPhrase);
|
---|
250 | OpenPhrases.Store(newSearchNode);
|
---|
251 | }
|
---|
252 | }
|
---|
253 | }
|
---|
254 | }
|
---|
255 | UpdateView(force: true);
|
---|
256 | }
|
---|
257 |
|
---|
258 | protected double GetPriority(SymbolString phrase, double r2, int maxSentenceLength) {
|
---|
259 | double relLength = (double)phrase.Count() / maxSentenceLength;
|
---|
260 | double error = 1.0 - r2;
|
---|
261 |
|
---|
262 | return relLength + ErrorWeight * error;
|
---|
263 | }
|
---|
264 |
|
---|
265 | private double GetR2(SymbolString phrase, double parentR2) {
|
---|
266 | int length = phrase.Count();
|
---|
267 |
|
---|
268 | // If the only nonterminal symbol is Expr, we can need to evaluate the sentence. Otherwise
|
---|
269 | // the phrase has the same r2 as its parent, from which it was derived.
|
---|
270 | for (int i = 0; i < length; i++) {
|
---|
271 | if (phrase[i] is NonterminalSymbol && phrase[i] != Grammar.Expr) {
|
---|
272 | return parentR2;
|
---|
273 | }
|
---|
274 | }
|
---|
275 |
|
---|
276 | return Grammar.EvaluatePhrase(phrase, Problem.ProblemData, OptimizeConstants);
|
---|
277 | }
|
---|
278 |
|
---|
279 | private int GetMaxSentenceLength() {
|
---|
280 | SymbolString s = new SymbolString(Grammar.StartSymbol);
|
---|
281 |
|
---|
282 | while (!s.IsSentence() && Grammar.GetComplexity(s) <= MaxComplexity) {
|
---|
283 | int expandedSymbolIndex = s.NextNonterminalIndex();
|
---|
284 | NonterminalSymbol expandedSymbol = (NonterminalSymbol)s[expandedSymbolIndex];
|
---|
285 |
|
---|
286 | var productions = Grammar.Productions[expandedSymbol];
|
---|
287 | var longestProduction = productions // Find production with most terminal symbols to expand as much as possible...
|
---|
288 | .OrderBy(CountTerminals) // but with lowest complexity/nonterminal count to keep complexity low.
|
---|
289 | .ThenByDescending(CountNonTerminals)
|
---|
290 | .First();
|
---|
291 |
|
---|
292 | s = s.DerivePhrase(expandedSymbolIndex, longestProduction);
|
---|
293 | }
|
---|
294 |
|
---|
295 | return s.Count();
|
---|
296 | }
|
---|
297 |
|
---|
298 | private int CountTerminals(Production p) {
|
---|
299 | return p.Count(s => s is TerminalSymbol);
|
---|
300 | }
|
---|
301 |
|
---|
302 | private int CountNonTerminals(Production p) {
|
---|
303 | return p.Count(s => s is NonterminalSymbol);
|
---|
304 | }
|
---|
305 |
|
---|
306 | #region Visualization in HL
|
---|
307 | // Initialize entries in result set.
|
---|
308 | private void InitResults() {
|
---|
309 | Results.Add(new Result(GeneratedPhrasesName, new IntValue(0)));
|
---|
310 | Results.Add(new Result(SearchStructureSizeName, new IntValue(0)));
|
---|
311 | Results.Add(new Result(GeneratedSentencesName, new IntValue(0)));
|
---|
312 | Results.Add(new Result(DistinctSentencesName, new IntValue(0)));
|
---|
313 | Results.Add(new Result(PhraseExpansionsName, new IntValue(0)));
|
---|
314 | Results.Add(new Result(OverwrittenSentencesName, new IntValue(0)));
|
---|
315 | Results.Add(new Result(AverageSentenceComplexityName, new DoubleValue(1.0)));
|
---|
316 | Results.Add(new Result(ExpansionsPerSecondName, "In Thousand expansions per second", new IntValue(0)));
|
---|
317 | }
|
---|
318 |
|
---|
319 | // Update the view for intermediate results in an algorithm run.
|
---|
320 | private int updates;
|
---|
321 | private void UpdateView(bool force = false) {
|
---|
322 | updates++;
|
---|
323 |
|
---|
324 | if (force || updates % GuiUpdateInterval == 1) {
|
---|
325 | ((IntValue)Results[GeneratedPhrasesName].Value).Value = ArchivedPhrases.Count;
|
---|
326 | ((IntValue)Results[SearchStructureSizeName].Value).Value = OpenPhrases.Count;
|
---|
327 | ((IntValue)Results[GeneratedSentencesName].Value).Value = AllGeneratedSentencesCount;
|
---|
328 | ((IntValue)Results[DistinctSentencesName].Value).Value = DistinctSentencesComplexity.Count;
|
---|
329 | ((IntValue)Results[PhraseExpansionsName].Value).Value = PhraseExpansionCount;
|
---|
330 | ((DoubleValue)Results[AverageSentenceComplexityName].Value).Value = DistinctSentencesComplexity.Select(pair => pair.Value).Average();
|
---|
331 | ((IntValue)Results[OverwrittenSentencesName].Value).Value = OverwrittenSentencesCount;
|
---|
332 | ((IntValue)Results[ExpansionsPerSecondName].Value).Value = (int)((PhraseExpansionCount /
|
---|
333 | ExecutionTime.TotalSeconds) / 1000.0);
|
---|
334 | }
|
---|
335 | }
|
---|
336 | #endregion
|
---|
337 |
|
---|
338 | #region events
|
---|
339 | public event EventHandler<PhraseEventArgs> PhraseFetched;
|
---|
340 | private void OnPhraseFetched(int hash, SymbolString symbolString) {
|
---|
341 | if (PhraseFetched != null) {
|
---|
342 | PhraseFetched(this, new PhraseEventArgs(hash, symbolString));
|
---|
343 | }
|
---|
344 | }
|
---|
345 |
|
---|
346 | public event EventHandler<PhraseAddedEventArgs> PhraseDerived;
|
---|
347 | private void OnPhraseDerived(int parentHash, SymbolString parentSymbolString, int addedHash, SymbolString addedSymbolString, Symbol expandedSymbol, Production expandedProduction) {
|
---|
348 | if (PhraseDerived != null) {
|
---|
349 | PhraseDerived(this, new PhraseAddedEventArgs(parentHash, parentSymbolString, addedHash, addedSymbolString, expandedSymbol, expandedProduction));
|
---|
350 | }
|
---|
351 | }
|
---|
352 |
|
---|
353 | public event EventHandler<PhraseAddedEventArgs> SentenceGenerated;
|
---|
354 | private void OnSentenceGenerated(int parentHash, SymbolString parentSymbolString, int addedHash, SymbolString addedSymbolString, Symbol expandedSymbol, Production expandedProduction) {
|
---|
355 | if (SentenceGenerated != null) {
|
---|
356 | SentenceGenerated(this, new PhraseAddedEventArgs(parentHash, parentSymbolString, addedHash, addedSymbolString, expandedSymbol, expandedProduction));
|
---|
357 | }
|
---|
358 | }
|
---|
359 |
|
---|
360 | public event EventHandler<PhraseAddedEventArgs> DistinctSentenceGenerated;
|
---|
361 | private void OnDistinctSentenceGenerated(int parentHash, SymbolString parentSymbolString, int addedHash, SymbolString addedSymbolString, Symbol expandedSymbol, Production expandedProduction) {
|
---|
362 | if (DistinctSentenceGenerated != null) {
|
---|
363 | DistinctSentenceGenerated(this, new PhraseAddedEventArgs(parentHash, parentSymbolString, addedHash, addedSymbolString, expandedSymbol, expandedProduction));
|
---|
364 | }
|
---|
365 | }
|
---|
366 |
|
---|
367 | #endregion
|
---|
368 |
|
---|
369 | }
|
---|
370 |
|
---|
371 | #region events for analysis
|
---|
372 |
|
---|
373 | public class PhraseEventArgs : EventArgs {
|
---|
374 | public int Hash { get; }
|
---|
375 |
|
---|
376 | public SymbolString Phrase { get; }
|
---|
377 |
|
---|
378 | public PhraseEventArgs(int hash, SymbolString phrase) {
|
---|
379 | Hash = hash;
|
---|
380 | Phrase = phrase;
|
---|
381 | }
|
---|
382 | }
|
---|
383 |
|
---|
384 | public class PhraseAddedEventArgs : EventArgs {
|
---|
385 | public int ParentHash { get; }
|
---|
386 | public int NewHash { get; }
|
---|
387 |
|
---|
388 | public SymbolString ParentPhrase { get; }
|
---|
389 | public SymbolString NewPhrase { get; }
|
---|
390 |
|
---|
391 | public Symbol ExpandedSymbol { get; }
|
---|
392 |
|
---|
393 | public Production ExpandedProduction { get; }
|
---|
394 |
|
---|
395 | public PhraseAddedEventArgs(int parentHash, SymbolString parentPhrase, int newHash, SymbolString newPhrase, Symbol expandedSymbol, Production expandedProduction) {
|
---|
396 | ParentHash = parentHash;
|
---|
397 | ParentPhrase = parentPhrase;
|
---|
398 | NewHash = newHash;
|
---|
399 | NewPhrase = newPhrase;
|
---|
400 | ExpandedSymbol = expandedSymbol;
|
---|
401 | ExpandedProduction = expandedProduction;
|
---|
402 | }
|
---|
403 | }
|
---|
404 |
|
---|
405 | #endregion
|
---|
406 | } |
---|