Changeset 5524 for trunk/sources/HeuristicLab.Problems.DataAnalysis/3.3/Symbolic/Formatters/SymbolicExpressionTreeMATLABFormatter.cs

Timestamp:

02/21/11 16:33:35 (13 years ago)

Author:

gkronber

Message:

#1325 Implemented MATLAB formatter rule for variable conditions and integrated handling of variable condition symbols into variable frequency analyzer and symbolic classification problem.

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis/3.3/Symbolic/Formatters/SymbolicExpressionTreeMATLABFormatter.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.3/Symbolic/Formatters/SymbolicExpressionTreeMATLABFormatter.cs

@@ -84 +84 @@
         foreach (string variableName in variableNames)
           stringBuilder.AppendLine("  " + variableName + " = Data(:, ???);");
-        stringBuilder.AppendLine("  for "+CurrentIndexVariable+" = size(Data,1):-1:1");
-        stringBuilder.AppendLine("    Target_estimated("+CurrentIndexVariable+") = " + FormatRecursively(node.SubTrees[0]) + ";");
+        stringBuilder.AppendLine("  for " + CurrentIndexVariable + " = size(Data,1):-1:1");
+        stringBuilder.AppendLine("    Target_estimated(" + CurrentIndexVariable + ") = " + FormatRecursively(node.SubTrees[0]) + ";");
         stringBuilder.AppendLine("  end");
         stringBuilder.AppendLine("end");
@@ -98 +98 @@
         stringBuilder.AppendLine("  y = (f0 + 2*f1 - 2*f3 - f4) / 8;");
         stringBuilder.AppendLine("end");
+        stringBuilder.AppendLine("function y = sigmoid(slope, x, threshold, a, b)");
+        stringBuilder.AppendLine("  p = 1.0 / (1 + exp(-slope * (x - threshold)));");
+        stringBuilder.AppendLine("  y = p * a + (1-p) * b;");
+        stringBuilder.AppendLine("end");
+
         return stringBuilder.ToString();
       }
@@ -269 +274 @@
         stringBuilder.Append(FormatRecursively(node.SubTrees[0]));
         currentLag -= laggedNode.Lag;
+      } else if (symbol is VariableCondition) {
+        var varConditionNode = node as VariableConditionTreeNode;
+        stringBuilder.AppendLine(" sigmoid(" + varConditionNode.Slope.ToString(CultureInfo.InvariantCulture) + ", " +
+          varConditionNode.VariableName + LagToString(currentLag) + ", " +
+          varConditionNode.Threshold.ToString(CultureInfo.InvariantCulture) + ", " +
+          FormatRecursively(varConditionNode.SubTrees[0]) + ", " +
+          FormatRecursively(varConditionNode.SubTrees[1]) + ")");
       } else {
         stringBuilder.Append("ERROR");