Changeset 1112 for trunk/sources/HeuristicLab.ES/ESEditor.cs

Timestamp:

01/12/09 15:45:21 (15 years ago)

Author:

abeham

Message:

Updated ES to automatically calculate LearningRate parameters based on the problem dimension (ticket #84)

File:

• trunk/sources/HeuristicLab.ES/ESEditor.cs (modified) (3 diffs)

trunk/sources/HeuristicLab.ES/ESEditor.cs

@@ -61 +61 @@
       : this() {
       ES = es;
+      int dimension = es.ShakingFactors.Length;
+      problemDimensionTextBox.Text = dimension.ToString();
     }
 
@@ -268 +270 @@
       if (ES.ShakingFactors.Length != dim) {
         problemDimensionTextBox.Text = ES.ShakingFactors.Length.ToString();
+        UpdateLearningRates();
       }
       Refresh();
@@ -287 +290 @@
         }
         ES.ShakingFactors = shakingFactors;
+        UpdateLearningRates();
         Refresh();
+      }
+    }
+
+    private void UpdateLearningRates() {
+      if (ES != null) {
+        int dimension = int.Parse(problemDimensionTextBox.Text);
+        ES.GeneralLearningRate = 1 / Math.Sqrt(2 * dimension);
+        ES.LearningRate = 1 / Math.Sqrt(2 * Math.Sqrt(dimension));
       }
     }