Changeset 14403

Timestamp:

11/17/16 18:41:05 (8 years ago)

Author:

gkronber

Message:

#2650: added support for factor variables to C# formatter

File:

• branches/symbreg-factors-2650/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Formatters/SymbolicDataAnalysisExpressionCSharpFormatter.cs (modified) (3 diffs)

branches/symbreg-factors-2650/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Formatters/SymbolicDataAnalysisExpressionCSharpFormatter.cs

@@ -110 +110 @@
           var constNode = node as ConstantTreeNode;
           strBuilder.Append(constNode.Value.ToString("g17", CultureInfo.InvariantCulture));
+        } else if (node.Symbol is FactorVariable) {
+          var factorNode = node as FactorVariableTreeNode;
+          FormatFactor(factorNode, strBuilder);
+        } else if (node.Symbol is BinaryFactorVariable) {
+          var binFactorNode = node as BinaryFactorVariableTreeNode;
+          FormatBinaryFactor(binFactorNode, strBuilder);
         } else {
           throw new NotSupportedException("Formatting of symbol: " + node.Symbol + " not supported for C# symbolic expression tree formatter.");
         }
       }
+    }
+
+    private void FormatFactor(FactorVariableTreeNode node, StringBuilder strBuilder) {
+      strBuilder.AppendFormat("EvaluateFactor({0}, new [] {{ {1} }}, new [] {{ {2} }})", node.VariableName,
+        string.Join(",", node.Symbol.GetVariableValues(node.VariableName)), string.Join(",", node.Weights.Select(v => v.ToString(CultureInfo.InvariantCulture))));
+    }
+
+    private void FormatBinaryFactor(BinaryFactorVariableTreeNode node, StringBuilder strBuilder) {
+      strBuilder.AppendFormat(CultureInfo.InvariantCulture, "EvaluateBinaryFactor({0}, {1}, {2})", node.VariableName, node.VariableValue, node.Weight);
     }
 
@@ -182 +197 @@
       GenerateAverageSource(strBuilder);
       GenerateIfThenElseSource(strBuilder);
+      GenerateFactorSource(strBuilder);
+      GenerateBinaryFactorSource(strBuilder);
       strBuilder.Append(Environment.NewLine + "public static double Evaluate (");
 
@@ -215 +232 @@
       strBuilder.AppendLine("}");
     }
+
+    private void GenerateFactorSource(StringBuilder strBuilder) {
+      strBuilder.AppendLine("private static double EvaluateFactor(string factorValue, string[] factorValues, double[] constants) {");
+      strBuilder.AppendLine("   for(int i=0;i<factorValues.Length;i++) " +
+                            "      if(factorValues[i] == factorValue) return constants[i];" +
+                            "   throw new ArgumentException();");
+      strBuilder.AppendLine("}");
+    }
+
+    private void GenerateBinaryFactorSource(StringBuilder strBuilder) {
+      strBuilder.AppendLine("private static double EvaluateBinaryFactor(string factorValue, string targetValue, double weight) {");
+      strBuilder.AppendLine("  return factorValue == targetValue ? weight : 0.0;");
+      strBuilder.AppendLine("}");
+    }
+
   }
 }