Changeset 17857

Timestamp:

03/03/21 13:33:41 (4 years ago)

Author:

bburlacu

Message:

#3107: Implement crude initial reinitialization concept.

File:

• branches/3107_LearningALPS/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Creators/SymbolFrequencyReinitializationStrategyController.cs (modified) (4 diffs)

branches/3107_LearningALPS/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Creators/SymbolFrequencyReinitializationStrategyController.cs

@@ -1 @@
-using HEAL.Attic;
+using System.Linq;
+
+using HEAL.Attic;
 using HeuristicLab.Common;
 using HeuristicLab.Core;
 using HeuristicLab.Encodings.SymbolicExpressionTreeEncoding;
 using HeuristicLab.Operators;
+using HeuristicLab.Optimization;
 using HeuristicLab.Parameters;
 
@@ -9 +12 @@
   [Item("SymbolFrequencyReinitializationStrategyController", "")]
   [StorableType("8F0B7020-A02F-491D-881A-5CE550426E5B")]
-  public class SymbolFrequencyReinitializationStrategyController : InstrumentedOperator {
+  public class SymbolFrequencyReinitializationStrategyController : InstrumentedOperator, IReinitializationStrategyController {
 
     private const string SymbolicExpressionTreeParameterName = "SymbolicExpressionTree";
@@ -24 +27 @@
     #endregion
 
-    #region Constructos
+    #region Constructors
     public SymbolFrequencyReinitializationStrategyController() {
       Parameters.Add(new ScopeTreeLookupParameter<ISymbolicExpressionTree>(SymbolicExpressionTreeParameterName, "The symbolic expression tree whose length should be calculated."));
@@ -48 +51 @@
       var grammar = SymbolicExpressionTreeGrammarParameter.ActualValue;
 
-      var symbolFrequencies = SymbolicExpressionSymbolFrequencyAnalyzer.CalculateSymbolFrequencies(trees);
-      // TODO: adapt grammar
+      var symbolFrequencies = SymbolicExpressionSymbolFrequencyAnalyzer.CalculateSymbolFrequencies(trees).ToDictionary(x => x.Key, x => x.Value);
+
+      foreach(var s in grammar.AllowedSymbols) {
+        if (s is ProgramRootSymbol || s is StartSymbol) {
+          continue;
+        }
+
+        if (symbolFrequencies.TryGetValue(s.Name, out double f)) {
+          s.InitialFrequency = f;
+        }
+      }
 
       return base.InstrumentedApply();