Changeset 4193 for branches/DataAnalysis/HeuristicLab.Problems.DataAnalysis/3.3/Symbolic/SimpleArithmeticExpressionInterpreter.cs

Timestamp:

08/11/10 12:59:53 (14 years ago)

Author:

gkronber

Message:

Created a feature/exploration branch for new data analysis features #1142

Location:

branches/DataAnalysis/HeuristicLab.Problems.DataAnalysis

Files:

• . (copied) (copied from trunk/sources/HeuristicLab.Problems.DataAnalysis)
• 3.3/Symbolic/SimpleArithmeticExpressionInterpreter.cs (modified) (4 diffs)

branches/DataAnalysis/HeuristicLab.Problems.DataAnalysis/3.3/Symbolic/SimpleArithmeticExpressionInterpreter.cs

@@ -65 +65 @@
       public const byte Constant = 20;
       public const byte Arg = 21;
+      public const byte Differential = 22;
     }
 
@@ -89 +90 @@
       { typeof(Constant), OpCodes.Constant },
       { typeof(Argument), OpCodes.Arg },
+      { typeof(DifferentialVariable), OpCodes.Differential},
     };
     private const int ARGUMENT_STACK_SIZE = 1024;
@@ -130 +132 @@
         var variableTreeNode = instr.dynamicNode as LaggedVariableTreeNode;
         instr.iArg0 = (ushort)dataset.GetVariableIndex(variableTreeNode.VariableName);
+      } else if (instr.opCode == OpCodes.Differential) {
+        var variableTreeNode = instr.dynamicNode as DifferentialVariableTreeNode;
+        instr.iArg0 = (ushort)dataset.GetVariableIndex(variableTreeNode.VariableName);
       }
       return instr;
@@ -277 +282 @@
             return dataset[actualRow, currentInstr.iArg0] * lagVariableTreeNode.Weight;
           }
+        case OpCodes.Differential: {
+            var diffTreeNode = currentInstr.dynamicNode as DifferentialVariableTreeNode;
+            if (row < 2 || row >= dataset.Rows - 2) throw new ArgumentException("Out of range access to dataset row: " + row);
+            return (-dataset[row + 2, currentInstr.iArg0] + 8 * dataset[row + 1, currentInstr.iArg0] - 8 * dataset[row - 1, currentInstr.iArg0] + dataset[row - 2, currentInstr.iArg0]) * (1.0/12.0) * diffTreeNode.Weight;
+          }
+
         case OpCodes.Constant: {
             var constTreeNode = currentInstr.dynamicNode as ConstantTreeNode;