Changeset 6643 for trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators

Timestamp:

08/08/11 17:47:46 (13 years ago)

Author:

mkommend

Message:

#1613: Added !MAE to RegressionSolutions.

File:

• trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/OnlineMeanAbsoluteErrorCalculator.cs (copied) (copied from trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/OnlineMeanSquaredErrorCalculator.cs) (5 diffs)

trunk/sources/HeuristicLab.Problems.DataAnalysis/3.4/OnlineCalculators/OnlineMeanAbsoluteErrorCalculator.cs

@@ -24 +24 @@
 
 namespace HeuristicLab.Problems.DataAnalysis {
-  public class OnlineMeanSquaredErrorCalculator : IOnlineCalculator {
+  public class OnlineMeanAbsoluteErrorCalculator : IOnlineCalculator {
 
-    private double sse;
+    private double sae;
     private int n;
-    public double MeanSquaredError {
+    public double MeanAbsoluteError {
       get {
-        return n > 0 ? sse / n : 0.0;
+        return n > 0 ? sae / n : 0.0;
       }
     }
 
-    public OnlineMeanSquaredErrorCalculator() {
+    public OnlineMeanAbsoluteErrorCalculator() {
       Reset();
     }
@@ -44 +44 @@
     }
     public double Value {
-      get { return MeanSquaredError; }
+      get { return MeanAbsoluteError; }
     }
     public void Reset() {
       n = 0;
-      sse = 0.0;
+      sae = 0.0;
       errorState = OnlineCalculatorError.InsufficientElementsAdded;
     }
@@ -58 +58 @@
       } else {
         double error = estimated - original;
-        sse += error * error;
+        sae += Math.Abs(error);
         n++;
         errorState = errorState & (~OnlineCalculatorError.InsufficientElementsAdded);        // n >= 1
@@ -68 +68 @@
       IEnumerator<double> firstEnumerator = first.GetEnumerator();
       IEnumerator<double> secondEnumerator = second.GetEnumerator();
-      OnlineMeanSquaredErrorCalculator mseCalculator = new OnlineMeanSquaredErrorCalculator();
+      OnlineMeanAbsoluteErrorCalculator maeCalculator = new OnlineMeanAbsoluteErrorCalculator();
 
       // always move forward both enumerators (do not use short-circuit evaluation!)
@@ -74 +74 @@
         double estimated = secondEnumerator.Current;
         double original = firstEnumerator.Current;
-        mseCalculator.Add(original, estimated);
-        if (mseCalculator.ErrorState != OnlineCalculatorError.None) break;
+        maeCalculator.Add(original, estimated);
+        if (maeCalculator.ErrorState != OnlineCalculatorError.None) break;
       }
 
       // check if both enumerators are at the end to make sure both enumerations have the same length
-      if (mseCalculator.ErrorState == OnlineCalculatorError.None &&
+      if (maeCalculator.ErrorState == OnlineCalculatorError.None &&
          (secondEnumerator.MoveNext() || firstEnumerator.MoveNext())) {
         throw new ArgumentException("Number of elements in first and second enumeration doesn't match.");
       } else {
-        errorState = mseCalculator.ErrorState;
-        return mseCalculator.MeanSquaredError;
+        errorState = maeCalculator.ErrorState;
+        return maeCalculator.MeanAbsoluteError;
       }
     }