[Coin-discuss] Symphony: how do I

[Michael Hennebry]

On Wed, 12 Jan 2005, Ted Ralphs wrote:

> Could you clarify your question? Do you want to print out the initial LP
> relaxation to a file in MPS format? Or do you just want the solution to
> the initial LP relaxation?

I want to know the initial relaxation,
though its solution would be good too.

match still isn't working right.
The command
bin.LINUX/OSI_GLPK/match   -F sample.mat
gives
...
====================== Statistics =========================
Number of created nodes :       1
Number of analyzed nodes:       1
Depth of tree:                  0
Size of the tree:               1
Leaves before trimming:         0
Leaves after trimming:          0
Repriced root's nf_status:      NF_CHECK_ALL
Not fixed variable num:         0
Number of Chains:               1
Number of Diving Halts:         0
Number of cuts in cut pool:     0

Solution Found: Node 0, Level 0
Solution Cost: 3.000
 0 matched with  1 at cost      1
 0 matched with  2 at cost      1
 1 matched with  2 at cost      1
 3 matched with  4 at cost      1
 3 matched with  5 at cost      1
 4 matched with  5 at cost      1

It looks like the variables aren't being labled integer.
When I was rolling my own IP solvers, my output routines
would would check to see whether integer variables were
outside the range [0.1, 0.9].  In this case, I think
we have six 0.5s.

-- 
Mike   hennebry at web.cs.ndsu.NoDak.edu
"Our gods are dead.  Ancient Klingon warriors slew them
... they were more trouble than they were worth."          --  Worf