This must seem like a really elementary question, so please bear with me. Suppose I have a nonlinear system of equations: f(x) = 0 where x = [ y z u ]'. y = vector of output var …

Many of the major players in our industry seem to share a common belief for the future of business. They predict analytic solutions as an key player in software solutions. IBM ha …

Hi, I'm facing a shift assignment problem for a big company, and, although I am quite experienced on this discipline, I'd like to know if someone could give me references and pape …

I'm interested in the solution to the following problem: I have initial capital $C$ which I can invest into $M$ classes of resources, each unit of a class $m_i$ matures at time $t …

I believe that revenue management could be really helpful for my current organization. I only have a surface knowledge of the subject. I do not have a whole lot of experience imp …

I'm trying to implement column generation for an inventory-routing type model in AMPL, using CPLEX 11 as the solver. I'm finding that my pricing problem is generating columns that …

How industrial engineering differs from operational research ? I came across following various which more or less relate to a common idea of making system efficient a) Industrial …

I have some general advice questions, but I'll make them as specific as I can. I'll soon have a BS in applied math and an MS in stat, and from everything I've seen, OR looks like a …

Apologies if this question is basic. The case we're all taught in class for the LP relaxation being equal to the linear program is a totally unimodular coefficient matrix. What a …

What are questions you would ask if you are conducting an interview for hiring a Operations Research Analyst?

Hey, I'm curious about the state of the art in solving graph coloring (by solving I mean finding the optimal coloring and proving that it is optimal). Can someone point me to pap …

I was browsing through our library today and stepped on "Optimization Methods for Logical Inference". Since there are no reader reviews at Amazon, maybe someone from OR-Exchange ha …

Please post an answer that is your favorite solver. If your favorite solver is already listed vote it up. Examples include CPLEX, Gurobi, GLPK, Symphony, lpsolve, Excel Solver, e …

Hi all, I would like to perform some benchmarks over a set of nonlinear problems where some functions (objective or nonlinear constrains) are defined over restricted domains, e.g. …

e.g. specialized algorithms for mincost network flows, max flows, generalized network flows, etc. Do such projects exist or are they plans for this?