[Help-glpk] Special Ordered Sets and extended MPS file formats

[Jean-Sebastien Roy]

I've been using GLPK for a few months now and it's really a great 
software. (I must confess I still use CPLEX and XPRESS for large MIP 
problems).

I would like to suggest two enhancements :

Even if GLPK seems not able to use special ordered sets information, it 
would be nice if it did not choke on CPLEX LP format problem files that 
provide it. The same remark applies to the MPS extensions used by CPLEX 
(SOS & co.) and XPRESS (SETS).

Another improvement would be for GLPK to be able to read extended MPS 
files as used by the two solvers previously mentioned, which have less 
limitations about variables name lengths, and provides optimisation 
sense information.

Thanks again for the great work !

Regards,

js