handling more general expressions about scip.jl

[mlubin]

No, use Pajarito :)

[rschwarz]

I thought we would evaluate neither functions nor derivates and instead just look at the expression graphs. If there's something we don't understand, we should just fail.

[fserra]

that is the current functionality... I just though it might be nice to also provide support for weird user defined stuff.

[mlubin]

You're pretty screwed if you're solving a nonconvex MINLP without expression graphs

[fserra]

sure, but if some crazy user wants to have some :ifelse in their expression
graph, he/she/it is completely screwed.

On Mon, Sep 5, 2016 at 5:12 PM, Miles Lubin [email protected]
wrote:

You're pretty screwed if you're solving a nonconvex MINLP without
expression graphs

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[mlubin]

A lot of expressions involving ifelse can be reformulated using binary variables. ifelse is more relevant for continuous NLP.

[fserra]

well, this could still be useful for convex minlp, right?