I've recently got my hands on an iPad, and I'm eager to turn my hand to creating some apps. It is a great interface for many tasks, I'm wondering if it would be suitable for an an …

Hi Guys, I am working on a LP relaxation of a large scale industrial problem ( over half a million variables and several tenths of thousands constraints ), using coin-or clp. Do y …

INFORMS has recently announced its data mining competition. They have posted the famous billion Dollar question of "how to do day trading" and whoever solves the challenge may get …

I have two types of products, videos and sounds, and I want to understand which sounds are purchased often with which videos or sets of videos. Pretty much a market basket analysis …

What would be a text format to state a mathematical programming problem that could be published here on OR-Exchange? Especially for linear programming, I like lpsolve .lp format. …

Stack Exchange is changing how they will work. Instead of having individuals come up with sites, they have a philosophy of how sites "should" work. It appears that OR-Exchange do …

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 …

I am solving big optimization models (more than 100k variables) with the academic version of CPLEX but I'd like to see if I can find an open source alternative, I solve mixed integ …

Hey, I'm trying to extract Cgl Gomory cuts out of the Cgl (Cut Generation Library) of Coin-Or The following is the code I'm using to extract the cuts - OsiCuts cutlist; CglGomory …