Re: [Help-glpk] [Fwd: glp_intopt conversion of solutions via callback]

[Michael Hennebry]

On Sat, 16 Jan 2016, Chris Matrakidis wrote:

> On 16 January 2016 at 17:17, Sascha Brügmann <address@hidden>
> wrote:
>
>
> > Michael Hennebry <hennebry <at> web.cs.ndsu.nodak.edu> writes:
> > > Perhaps it would be a good idea to make the presolving and
> > > scaling transformation available to the user program.
> > > It could just be a matter of documentation.
> > > The information must already be somewhere,
> > > otherwise glpsol could not invert it.
> > Yes, thats what I'm talking about!
>
>
> Unfortunately it's not just a matter of documentation: internally, only the
> transformations to convert solutions of the preprocessed problem back to
> the original problem are available.

That might be sufficient.
I'd be surprised if the transformation were not effectively invertible,
i.e. a feasible solution in the original variables could not
be transformed to a solution for the proprocessed problem.

--
Michael   address@hidden
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