[simonblanke]

Yeah this is a warning from sklearns gaussian process regressor. Sklearn probably wants you to increase the "n_restarts_optimizer"-parameter of the gpr, but from my experience this warning does not correlate with bad results from Gradient-Free-Optimizers.

Sklearn warnings are often difficult to silence. Just google "sklearn suppress warnings" to get a code snippet for this problem.

[morelandjs]

thanks!