Changeset 16083

Timestamp:

08/16/18 09:45:36 (6 years ago)

Author:

gkronber

Message:

#2937: added symbol for AQ and support for AQ in interpreter and AutoDiff converter

Location:

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4

Files:

• Converters/TreeToAutoDiffTermConverter.cs (modified) (1 diff)
• Grammars/FullFunctionalExpressionGrammar.cs (modified) (3 diffs)
• HeuristicLab.Problems.DataAnalysis.Symbolic-3.4.csproj (modified) (1 diff)
• Interpreter/OpCodes.cs (modified) (3 diffs)
• Interpreter/SymbolicDataAnalysisExpressionTreeLinearInterpreter.cs (modified) (1 diff)
• Symbols/AnalyticalQuotient.cs (added)

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Converters/TreeToAutoDiffTermConverter.cs

@@ -212 +212 @@
         if (terms.Count == 1) return 1.0 / terms[0];
         else return terms.Aggregate((a, b) => new AutoDiff.Product(a, 1.0 / b));
+      }
+      if(node.Symbol is AnalyticalQuotient) {
+        var x1 = ConvertToAutoDiff(node.GetSubtree(0));
+        var x2 = ConvertToAutoDiff(node.GetSubtree(1));
+        return x1 / (TermBuilder.Power(1 + x2 * x2, 0.5));
       }
       if (node.Symbol is Logarithm) {

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Grammars/FullFunctionalExpressionGrammar.cs

@@ -48 +48 @@
       var mul = new Multiplication();
       var div = new Division();
+      var aq = new AnalyticalQuotient();
       var mean = new Average();
       var sin = new Sine();
@@ -123 +124 @@
       autoregressiveVariable.Enabled = false;
 
-      var allSymbols = new List<Symbol>() { add, sub, mul, div, mean, sin, cos, tan, log, square, pow, sqrt, root, exp,
+      var allSymbols = new List<Symbol>() { add, sub, mul, div, aq, mean, sin, cos, tan, log, square, pow, sqrt, root, exp,
         airyA, airyB, bessel, cosineIntegral, dawson, erf, expIntegralEi, fresnelCosineIntegral, fresnelSineIntegral, gamma, hypCosineIntegral, hypSineIntegral, norm, psi, sineIntegral,
         @if, gt, lt, and, or, not,xor, timeLag, integral, derivative, constant, variableSymbol, binFactorVariable, factorVariable, laggedVariable,autoregressiveVariable, variableCondition };
@@ -130 +131 @@
       };
 
-      var binaryFunctionSymbols = new List<Symbol>() { pow, root, gt, lt, variableCondition };
+      var binaryFunctionSymbols = new List<Symbol>() { pow, root, gt, lt, aq, variableCondition };
       var ternarySymbols = new List<Symbol>() { add, sub, mul, div, mean, and, or, xor };
       var terminalSymbols = new List<Symbol>() { variableSymbol, binFactorVariable, factorVariable, constant, laggedVariable, autoregressiveVariable };

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/HeuristicLab.Problems.DataAnalysis.Symbolic-3.4.csproj

@@ -208 +208 @@
     <Compile Include="Symbols\BinaryFactorVariable.cs" />
     <Compile Include="Symbols\BinaryFactorVariableTreeNode.cs" />
+    <Compile Include="Symbols\AnalyticalQuotient.cs" />
     <Compile Include="Symbols\FactorVariableTreeNode.cs" />
     <Compile Include="Symbols\FactorVariable.cs" />

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Interpreter/OpCodes.cs

@@ -85 +85 @@
     public const byte FactorVariable = 46;
     public const byte BinaryFactorVariable = 47;
+    public const byte AnalyticalQuotient = 48;
 
 
@@ -113 +114 @@
       { typeof(Power),OpCodes.Power},
       { typeof(Root),OpCodes.Root},
-      { typeof(TimeLag), OpCodes.TimeLag}, 
+      { typeof(TimeLag), OpCodes.TimeLag},
       { typeof(Integral), OpCodes.Integral},
       { typeof(Derivative), OpCodes.Derivative},
@@ -135 +136 @@
       { typeof(Bessel), OpCodes.Bessel},
       { typeof(FactorVariable), OpCodes.FactorVariable },
-      { typeof(BinaryFactorVariable), OpCodes.BinaryFactorVariable }
+      { typeof(BinaryFactorVariable), OpCodes.BinaryFactorVariable },
+      {typeof(AnalyticalQuotient), OpCodes.AnalyticalQuotient }
     };
 

branches/2937_SymReg_AnalyticalQuotient/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Interpreter/SymbolicDataAnalysisExpressionTreeLinearInterpreter.cs

@@ -215 +215 @@
           if (instr.nArguments == 1) p = 1.0 / p;
           instr.value = p;
+        } else if (instr.opCode == OpCodes.AnalyticalQuotient) {
+          var x1 = code[instr.childIndex].value;
+          var x2 = code[instr.childIndex + 1].value;
+          instr.value = x1 / Math.Sqrt(1 + x2 * x2);
         } else if (instr.opCode == OpCodes.Average) {
           double s = code[instr.childIndex].value;