Changeset 17944 for trunk/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/Evaluators

Timestamp:

04/15/21 08:59:36 (4 years ago)

Author:

gkronber

Message:

#3117: catch a new error value for lsfit returned by new alglib version

File:

• trunk/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/Evaluators/SymbolicRegressionConstantOptimizationEvaluator.cs (modified) (2 diffs)

trunk/HeuristicLab.Problems.DataAnalysis.Symbolic.Regression/3.4/SingleObjective/Evaluators/SymbolicRegressionConstantOptimizationEvaluator.cs

@@ -272 +272 @@
         alglib.lsfitsetcond(state, 0.0, maxIterations);
         alglib.lsfitsetxrep(state, iterationCallback != null);
-        //alglib.lsfitsetgradientcheck(state, 0.001);
         alglib.lsfitfit(state, function_cx_1_func, function_cx_1_grad, xrep, rowEvaluationsCounter);
         alglib.lsfitresults(state, out retVal, out c, out rep);
@@ -285 +284 @@
 
       //retVal == -7  => constant optimization failed due to wrong gradient
-      if (retVal != -7) {
+      //          -8  => optimizer detected  NAN / INF  in  the target
+      //                 function and/ or gradient
+      if (retVal != -7 && retVal != -8) {
         if (applyLinearScaling) {
           var tmp = new double[c.Length - 2];