Changeset 14255 for trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4

Timestamp:

08/16/16 12:04:56 (8 years ago)

Author:

pfleck

Message:

#2632

• Added the name of the target variable in plots and charts (scatter, line, ...).
• Renamed MathSymbolicDataAnalysisModelView and added two subclasses for regression and classification that shows the name of the target variable in the equation. (added and used a new Format method to the LatexFormatter that uses the actual target name when encountering the StartSymbol)

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Formatters/SymbolicDataAnalysisExpressionLatexFormatter.cs (modified) (6 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Formatters/SymbolicDataAnalysisExpressionLatexFormatter.cs

@@ -36 +36 @@
     private int targetCount;
     private int currentLag;
+    private string targetVariable;
+    private bool containsTimeSeriesSymbol;
 
     [StorableConstructor]
@@ -55 +57 @@
 
     public string Format(ISymbolicExpressionTree symbolicExpressionTree) {
+      return Format(symbolicExpressionTree, null);
+    }
+    public string Format(ISymbolicExpressionTree symbolicExpressionTree, string targetVariable) {
       try {
         StringBuilder strBuilder = new StringBuilder();
         constants.Clear();
+        this.targetVariable = targetVariable;
+        containsTimeSeriesSymbol = symbolicExpressionTree.IterateNodesBreadth().Any(n => IsTimeSeriesSymbol(n.Symbol));
         strBuilder.AppendLine(FormatRecursively(symbolicExpressionTree.Root));
         return strBuilder.ToString();
@@ -64 +71 @@
         return ex.Message + Environment.NewLine + ex.StackTrace;
       }
+    }
+    static bool IsTimeSeriesSymbol(ISymbol s) {
+      return s is TimeLag || s is Integral || s is Derivative || s is LaggedVariable;
     }
 
@@ -197 +207 @@
         strBuilder.Append(invokeNode.Symbol.FunctionName + @" \left( ");
       } else if (node.Symbol is StartSymbol) {
-        strBuilder.Append("target_" + (targetCount++) + "(t) & = ");
+        FormatStartSymbol(strBuilder);
       } else if (node.Symbol is Argument) {
         var argSym = node.Symbol as Argument;
@@ -303 +313 @@
       } else if (node.Symbol is StartSymbol) {
         strBuilder.Append(@"\\" + Environment.NewLine);
-        strBuilder.Append("target_" + (targetCount++) + "(t) & = ");
+        FormatStartSymbol(strBuilder);
       } else if (node.Symbol is Power) {
         strBuilder.Append(@"\right) ^ { \operatorname{round} \left(");
@@ -433 +443 @@
     }
 
+    private void FormatStartSymbol(StringBuilder strBuilder) {
+      strBuilder.Append(targetVariable ?? "target_" + (targetCount++));
+      if (containsTimeSeriesSymbol)
+        strBuilder.Append("(t)");
+      strBuilder.Append(" & = ");
+    }
+
     private string LagToString(int lag) {
       if (lag < 0) {