Changeset 5500 for branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/OnlineEvaluators

Timestamp:

02/17/11 00:59:36 (13 years ago)

Author:

mkommend

Message:

#1418: Added all single objective symbolic regression analyzers.

Location:

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/OnlineEvaluators

Files:

• OnlineMeanSquaredErrorEvaluator.cs (modified) (2 diffs)
• OnlinePearsonsRSquaredEvaluator.cs (modified) (2 diffs)

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/OnlineEvaluators/OnlineMeanSquaredErrorEvaluator.cs

@@ -21 +21 @@
 
 using System;
+using System.Collections.Generic;
 
 namespace HeuristicLab.Problems.DataAnalysis {
@@ -60 +61 @@
     }
     #endregion
+
+    public static double Calculate(IEnumerable<double> first, IEnumerable<double> second) {
+      IEnumerator<double> firstEnumerator = first.GetEnumerator();
+      IEnumerator<double> secondEnumerator = second.GetEnumerator();
+      OnlineMeanSquaredErrorEvaluator mseEvaluator = new OnlineMeanSquaredErrorEvaluator();
+
+      while (firstEnumerator.MoveNext() & secondEnumerator.MoveNext()) {
+        double estimated = secondEnumerator.Current;
+        double original = firstEnumerator.Current;
+        mseEvaluator.Add(original, estimated);
+      }
+
+      if (secondEnumerator.MoveNext() || firstEnumerator.MoveNext()) {
+        throw new ArgumentException("Number of elements in first and second enumeration doesn't match.");
+      } else {
+        return mseEvaluator.MeanSquaredError;
+      }
+    }
   }
 }

branches/DataAnalysis Refactoring/HeuristicLab.Problems.DataAnalysis/3.4/OnlineEvaluators/OnlinePearsonsRSquaredEvaluator.cs

@@ -21 +21 @@
 
 using System;
+using System.Collections.Generic;
 using HeuristicLab.Common;
 
@@ -68 +69 @@
       return double.IsNaN(x) || double.IsInfinity(x);
     }
+
+    public static double Calculate(IEnumerable<double> first, IEnumerable<double> second) {
+      IEnumerator<double> firstEnumerator = first.GetEnumerator();
+      IEnumerator<double> secondEnumerator = second.GetEnumerator();
+      OnlinePearsonsRSquaredEvaluator rSquaredEvaluator = new OnlinePearsonsRSquaredEvaluator();
+
+      while (firstEnumerator.MoveNext() & secondEnumerator.MoveNext()) {
+        double estimated = secondEnumerator.Current;
+        double original = firstEnumerator.Current;
+        rSquaredEvaluator.Add(original, estimated);
+      }
+
+      if (secondEnumerator.MoveNext() || firstEnumerator.MoveNext()) {
+        throw new ArgumentException("Number of elements in first and second enumeration doesn't match.");
+      } else {
+        return rSquaredEvaluator.RSquared;
+      }
+    }
   }
 }