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RE: [Help-glpk] XML Result Output from glpsol

From: Robert Fourer
Subject: RE: [Help-glpk] XML Result Output from glpsol
Date: Thu, 3 May 2007 17:23:49 -0500


> AFAIK, there were attempts to adapt xml for coding lp/mip data; see
> the paper "LPFML: A W3C XML Schema for Linear Programming"
> However, I am not sure if there is a similar format for coding lp/mip
> solution.
> Andrew Makhorin

LPFML has been extended to an XML-based format, designated OSiL, for LP/MIP and
other kinds of optimization problems (such as nonlinear optimization).  There's
an updated description of it at

There's a format similar to OSiL -- designated OSrL -- for communicating
optimization results from solvers.  A broader framework, called Optimization
Services, defines a number of other formats relating to optimization.  A start
on a website for it can be seen at, and it will be
distributed as a project from COIN-OR ( within a few months.

Bob Fourer

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