LinearProgramming unbounded
- To: mathgroup at smc.vnet.net
- Subject: [mg65682] LinearProgramming unbounded
- From: andrealk at gmail.com
- Date: Fri, 14 Apr 2006 04:32:06 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hello all -
I have run into what I hope is an easily resolved problem. I am using
the LinearProgramming function to maximize an objective function, which
in the code below is called "objfcn". "S" is a matrix representing the
equations with 761 rows and 1320 columns; "zerovector" is a vector, one
column and 761 rows, where each element is {0,0}, meaning that each
equation is exactly equal to zero; "constraints" is a list of 1320
constraints. I have used LinearProgramming successfully in many
instances. However, I now get an error saying that the system in
unbounded. How can that be? As far as I can tell my dimensions are
all correct.
Does anyone have any suggestions? Has anyone had a similar problem?
Below is what the code looks like.
LinearProgramming[-objfcn, S, zerovector, constraints]
Thanks for your help,
Andrea Knorr
University of Connecticut