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Paul Rubin
Apostate mathematician interested in operations research
Apostate mathematician interested in operations research

Paul's posts

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Nice piece on how nonprofit organizations can get free analytics consulting.

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Fischetti on Benders Decomposition
I just came across slides for a presentation that Matteo Fischetti (University of Padova) gave at the Lunteren Conference on the Mathematics of Operations Research a few days ago. Matteo is both expert at and dare I say an advocate of Benders decomposition ...

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Pro Bono Analytics Is Growing Social
Pro Bono Analytics is a program by INFORMS (the Institute for Operations Research and the Management Sciences, for the acronym-averse), "the largest society in the world for professionals in the field of
operations research (O.R.), management science, and ...

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Mapping Trackball Buttons
For years, I've used a Logitech M570 wireless trackball with my Linux Mint PC. I generally prefer trackballs to mice -- no need to lift and reposition after a bunch of movement -- and I find that using my thumb, rather than my index finger (or, if I'm in a ...

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rJava: The Gift That Keeps On Giving
I've written not once but twice before (in 2011 and 2015 ) about the hassles of getting the rJava package to work with R . Every time I think I have a fix for it, someone changes something somewhere and the previous fix no longer works. I had to reinstall r...

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Mint Upgrade Woes
As I mentioned a couple of months ago , I upgraded a laptop from Linux Mint 17.3 ("Rebecca") to 18.0 ("Sarah") with minimal difficulties. My laptop serves as a guinea pig for these things. Once I'm sure things work fine on the laptop, I'll consider upgradin...

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A Panel Launcher Menu for Mate
A recent upgrade to my Linux Mint PC forced me to switch the desktop environment from Cinnamon (which I've been using for years) to Mate . For the most part, that was painless, but a few things from my old desktop did not translate well. I had the icons on ...

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Using an MCE Remote with Mythbuntu
As I chronicled in a previous post , I've been using MythMote on my (Android) cell phone to serve as a remote control for my MythTV installation (running on Mythbuntu ) when watching recordings  or live TV. For the most part this works fine, but there are l...

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Support for Benders Decomposition in CPLEX
As of version 12.7, CPLEX now has built-in support for Benders decomposition . For details on that (and other changes to CPLEX), I suggest you look at this post on J-F Puget's blog and Xavier Nodet's related slide show . I've previously posted Java code for...

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Benders Decomposition in CPLEX
I finally got around to constructing a reasonably small example of Benders decomposition for solving a mixed-integer linear program
(MIP) in CPLEX . What I am about to describe works in CPLEX 12.4 (possibly 12.2 or 12.3) and hopefully will work in the futu...
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