[SCIP] Matlab SCIP interface- # of function evaluations

[Marc Pfetsch]

Hi Yuan,

I am not sure what you mean by "function evaluations" ...

Are you solving a MINLP and want to know how often the underlying 
functions describing the MINLP are evaluated? While this is an 
interesting measure for iterative (e.g. gradient descent based) local 
NLP solvers, this is not so easy for global solvers like SCIP. This is 
because SCIP uses the algebraic description of the functions and in 
particular, partial information about the functions. As one example, the 
solved relaxations might contain gradient cuts - and it is not clear how 
to count the usage of these.

Best

Marc



On 03/01/2022 23:38, Yuan Hong wrote:
> Hello,
> 
> 
> I have installed Matlab SCIP interface successfully. I still have a 
> question. Can I get the number of function evaluations after running a 
> test problem?
> 
> 
> Thanks,
> Yuan
> 
> _______________________________________________
> Scip mailing list
> Scip at zib.de
> https://listserv.zib.de/mailman/listinfo/scip
>