Re: [Help-glpk] MOST E-Flux2 error message

[Andrew Makhorin]

On Tue, 2016-08-30 at 16:35 +0000, Annapaula Correia (MED) wrote:
> 
> Hi,
> 
> 
> I'm trying to use MOST to create out some metabolic reconstructions
> with expression data. I was wondering if you could please help me with
> an error I am receiving.
> 
> 
> I've loaded the SBML file into MOST and run the FBA. However when I
> add the RNA gene expression data ( using E-Flux2) I receive the
> following message:
> 
> 
> java.lang.Exception: LP relaxation of the MIP problem instance has no
> dual feasible solution at
> edu.rutgers.MOST.optimization.solvers.GLPKSolver.optimize(GLPKSolver.java:325)
>  at edu.rutgers.MOST.analysis.Eflux2.run(Eflux2.java:38) at 
> edu.rutgers.MOST.presentation.GraphicalInterface$77.analysisPart(GraphicalInterface.java:2242)
>  at 
> edu.rutgers.MOST.presentation.GraphicalInterface$1AnalysisCommonActionListener$1.run(GraphicalInterface.java:1860)
> 
> 
> Do you know how I could solve this problem?

The message "LP relaxation has no dual feasible solution" means that
most likely your model lacks some essential constraints, so it has
unbounded optimum.

Please note that this is list is about glpk, not about FBA, so probably
you need to post your question to a more appropriate list/forum.

> 
> 
> Many thanks
> 
> 
> Anna
> 
> 
>