[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Help-glpk] Re: BAK - GLPK 4.45

From: glpk xypron
Subject: [Help-glpk] Re: BAK - GLPK 4.45
Date: Tue, 04 Jan 2011 19:51:43 +0100

Hello Brady,

Andrew indicated in
that he is interested in supporting branching analysis in GLPK.

A description of the BAK file format is given in

Unfortunately it is not a strict file format specification. E.g.
according to your document it is unclear which of the following
would be a valid format of <time>:
780 s
3.6 h

The document says: "We also need to know whether each node is a
left branch or right branch, indicated with a branch direction
of 'L' or 'R'."

It is unclear what left of right refers to. Do you mean branching
down to 0 and up to 1 (as implemented in patched glpios03.c) - 
or the output sequence in the diagrams?

Hence I think the next step for moving BAK file support to GLPK
should be to create an unambiguous file format specification.

Best regards


-------- Original-Nachricht --------
> Datum: Mon, 03 Jan 2011 22:59:52 -0500
> Betreff: Re: BAK - GLPK 4.45

> Thanks, Xypron!  I'll try to incorporate this later this week.
> One of the things I've been meaning to do is to look over the code and 
> email Andrew about what it would take to get it to be part of the main 
> GLPK code.
> You're one of the most active people on the GLPK list.  Are you at all 
> motivated to help get the BAK changes into the main GLPK code?
> Brady
> On 12/28/2010 03:19 PM, glpk xypron wrote:
> > Hello Brady,
> >
> > please, find appended the files I used to patch GLPK 4.45
> > to provide output for BAK.
> >
> > Best regards
> >
> > Xypron

A non-text attachment was scrubbed...
Name: bak-glpk-4.45.tar.gz
Size: 42508 bytes

GMX DSL Doppel-Flat ab 19,99 Euro/mtl.! Jetzt mit 
gratis Handy-Flat!

reply via email to

[Prev in Thread] Current Thread [Next in Thread]