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Ignore:
Timestamp:
07/17/21 18:14:43 (17 months ago)
Author:
gkronber
Message:

#3095: merged r17817 from trunk to stable

Location:
stable
Files:
3 edited

Legend:

Unmodified
Added
Removed
  • stable

  • stable/HeuristicLab.Problems.DataAnalysis.Symbolic

  • stable/HeuristicLab.Problems.DataAnalysis.Symbolic/3.4/Converters/TreeToAutoDiffTermConverter.cs

    r17181 r18015  
    258258      if (node.Symbol is CubeRoot) {
    259259        return cbrt(ConvertToAutoDiff(node.GetSubtree(0)));
     260      }
     261      if (node.Symbol is Power) {
     262        var powerNode = node.GetSubtree(1) as ConstantTreeNode;
     263        if (powerNode == null)
     264          throw new NotSupportedException("Only integer powers are allowed in parameter optimization. Try to use exp() and log() instead of the power symbol.");
     265        var intPower = Math.Truncate(powerNode.Value);
     266        if (intPower != powerNode.Value)
     267          throw new NotSupportedException("Only integer powers are allowed in parameter optimization. Try to use exp() and log() instead of the power symbol.");
     268        return AutoDiff.TermBuilder.Power(ConvertToAutoDiff(node.GetSubtree(0)), intPower);
    260269      }
    261270      if (node.Symbol is Sine) {
     
    340349          !(n.Symbol is AnalyticQuotient) &&
    341350          !(n.Symbol is Cube) &&
    342           !(n.Symbol is CubeRoot)
     351          !(n.Symbol is CubeRoot) &&
     352          !(n.Symbol is Power)
    343353        select n).Any();
    344354      return !containsUnknownSymbol;
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