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[Help-glpk] restart interior point method


From: Sebastien . deMentendeHorne
Subject: [Help-glpk] restart interior point method
Date: Fri, 22 Feb 2002 14:11:26 +0100

Hi again,

I am using the interior point method to solve LPs which is much faster than
the simplex method for the problem I am considering.
I must solve the same problem several times with different coefficients for
the objective function. The IP method does make a symbolic factorisation
(well, that is what is printed during the preprocessing, before the
iterations begin) that takes a long time.

Is it possible to keep this work between problems (in an object that is
passed to the solver like for glp_simplex1 ?
It would save me a lot of time as the iterations themselves are quit fast.

Any hint is welcome.

Sébastien de Menten de Horne      |    ELECTRABEL 
Tel:  ++32 10 48 51 76            |    Quantitative Analysis, 
Fax:  ++32 10 48 51 09            |    Place de l'université, 16, 4ème étage

Gsm:  ++32 478 789 444            |    B-1348 Louvain-la-Neuve, BELGIUM 




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