[Coin-discuss] presolve IP

[John J Forrest]

Matt,

This is a clumsy Cbc type reply.

cbc xxxxx.mps -preprocess save -heuristic off -maxnode -1 -solve

will save cbc-presolved model on presolved.mps

The -heuristic off and -maxnode -1are there to make it stop as quickly as 
possible. 

The offset should be fine.

John





[Coin-discuss] presolve IP

Matthew Galati 
to:
coin-discuss
09/24/2009 02:34 PM


Sent by:
coin-discuss-bounces at list.coin-or.org







What is the simplest way to presolve an IP? I don't care about doing it in 
memory or even having any way to "unravel/postprocess" to get back to the 
original space.

I simply want to:
 (1) read an MPS file
 (2) presolve it
 (3) output a new MPS file (and perhaps an objective offset, so that I can 
check that I match up at end)

Thanks,
Matt_______________________________________________
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Coin-discuss at list.coin-or.org
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