Can the optimizer stop when best_y is smaller than a specific value?

[Seal-o-O]

Hi, thanks for your contributions.

I notice that the optimizer will finish when the iteration number is over than 'max_iter', or the time is over 'max_time'. But I wonder that can I set a specific number, if the best_y in the optimization is smaller than this value, it means that a optimal result has been found, then BO can stop searching.

Hoping for your reply, thanks!