Changeset 12797

Timestamp:

07/22/15 10:25:02 (9 years ago)

Author:

gkronber

Message:

#2439: fixed problem in GaussianProcess algorithm after changes in BFGS

Location:

trunk/sources

Files:

• HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/GaussianProcessBase.cs (modified) (2 diffs)
• HeuristicLab.Algorithms.GradientDescent/3.3/LbfgsUpdateResults.cs (modified) (1 diff)

trunk/sources/HeuristicLab.Algorithms.DataAnalysis/3.4/GaussianProcess/GaussianProcessBase.cs

@@ -108 +108 @@
       Parameters[ApproximateGradientsParameterName].Hidden = true; // should not be changed
 
+      // necessary for BFGS
+      Parameters.Add(new ValueParameter<BoolValue>("Maximization", new BoolValue(false)));
+      Parameters["Maximization"].Hidden = true;
+
       var randomCreator = new HeuristicLab.Random.RandomCreator();
       var gpInitializer = new GaussianProcessHyperparameterInitializer();
@@ -181 +185 @@
     [StorableHook(HookType.AfterDeserialization)]
     private void AfterDeserialization() {
+      // BackwardsCompatibility3.4
+      #region Backwards compatible code, remove with 3.5
+      if (!Parameters.ContainsKey("Maximization")) {
+        Parameters.Add(new ValueParameter<BoolValue>("Maximization", new BoolValue(false)));
+        Parameters["Maximization"].Hidden = true;
+      }
+      #endregion
     }
   }

trunk/sources/HeuristicLab.Algorithms.GradientDescent/3.3/LbfgsUpdateResults.cs

@@ -62 +62 @@
     private DoubleValue Quality { get { return QualityParameter.ActualValue; } }
     private LbfgsState State { get { return StateParameter.ActualValue; } }
-    private BoolValue Maximization { get { return MaximizationParameter.ActualValue; } }
+
+    private BoolValue Maximization {
+      get {
+        // BackwardsCompatibility3.3
+        #region Backwards compatible code, remove with 3.4
+        // the parameter is new, previously we assumed minimization problems
+        if (MaximizationParameter.ActualValue == null) return new BoolValue(false);
+        #endregion
+        return MaximizationParameter.ActualValue;
+      }
+    }
+
     #endregion