
From:  Nicholas Patsourakis 
Subject:  [Helpglpk] binary variables in glpk 
Date:  Sat, 15 Sep 2007 19:07:26 +0300 
I am newbie in glpk and I want to solve an lp problem with
binary decision variables, that is zero (0) or one (1). How can I declare
that in glpk? In the manual I found these: LPX_FR
−1 < x < +1 Free
(unbounded) variable LPX_LO
lb _ x < +1 Variable with lower bound LPX_UP
−1 < x _ ub Variable
with upper bound LPX_DB
lb _ x _ ub Doublebounded variable LPX_FX lb = x = ub Fixed
variable But I none of the above can
declare my binary decision variables (lpx set col bnds). Can anyone help? I am sure that there
must be an answer but I cant find it. 
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