Question about the cause of "negative curvature" warning

[bgranzow]

Question about the cause of "negative curvature" warning

[bgranzow]

Hi Navid, thanks for the information.

Unfortunately, I think it is likely that you haven't actually done anything incorrect, and that this implementation is not actually that robust. My motivation for writing this was for a class project, and I really only tested some small problems with a small number of design variables (which can be seen in the .pdf in this repository). Also unfortunately, I don't have real plans to further maintain this project.

I'm sorry this answer isn't much help. If you would like to use the L-BFGS-B algorithm with Matlab, I'd encourage you take a look at this wrapper around the original L-BFGS-B implementation, if you haven't already.

Cheers,
Brian