[PPL-devel] Re: several messages
P M Hill
hill at comp.leeds.ac.uk
Mon Jun 11 11:59:40 CEST 2001
Hi all,
> Log message:
> Assume almost nothing from the input: only generators are up to date
> and not even necessarily minimized.
>
> Wild guess: perhaps add_and_minimize() does not minimize?
--------------------------------------------------------------------
> > [Roberto]
> > bug3.dat [...]
> > Assume almost nothing from the input: only generators are up to date
> > and not even necessarily minimized.
> > Wild guess: perhaps add_and_minimize() does not minimize?
> I tried that too, a few days ago.
> But my wild guess was slightly different: minimize() does not minimize!
> If you follow the way x changes, you see that, after the execution of
> x.minimize(), the constraints system of x is of course "up-to-date" and
> "minimized", but it's different from the "normal" minimized form: i.e.,
> x.minimize() gives as output exactly the matrix we don't like.
> Please note: I didn't check everything with the latest versions of our
> code, and I had messed up the code quite a bit before testing; so, try
> by yourself before speculating. I may be wrong.
> Andrea.
>
sorry, but can someone help me here - what do you mean by "minimize"?
I cannot find it defined anywhere.
I looked at the documentation for add_and_minimize and it does not claim
that the resulting set of constraints is "minimized".
(although the name add_and_minimize does suggest this will be the case...)
ciao
Pat
More information about the PPL-devel
mailing list