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Careful with Wolfram|Alpha

Wolfram|Alpha is an interesting service. It is not a search engine per se. If you ask it “What is Operations Research” it draws a blank (*) (mimicking most of the world) and if you ask it “Who is Michael Trick” it returns information on two movies “Michael” and “Trick” (*). But if you give it […]

Google does Operations Research and Open Source

While Google is, of course, heavily active in analytics, the company has not been known for its operations research. The “ethos” of the company has been heavily computer science based. So, while I would count much of what they do as “operations research”, they probably would not use that label. The line between operations research […]

Gurobi software now available for download

I am behind Erwin Kalvelagen, who writes an extremely useful blog where many challenging modeling problems are solved (this is one of my “must read” blogs), in announcing that Gurobi’s standalone software is now available.  I particularly like that the trial version is 500 variables and 500 constraints, which is large enough to see how […]

Further workshops at INFORMS Practice

Over at the INFORMS Practice Conference Blog, I have entries on Gurobi and ILOG, an IBM Company. Both presentations were inspiring in their own ways. Gurobi Post: It goes without saying that these statements are my individual views of the workshops, and are not the official word from either the companies or INFORMS. The world […]

Operations Research is hot at IBM

IBM announced today that it is forming a new consulting group for business analytics and optimization, called Business Analytics and Optimization Services.  With 4000 people, this is a pretty serious operation!  You can check out the news release and the Business Week coverage.   I’ll pass over the fact that IBM doesn’t use the phrase “operations […]

Time for Baseball

The baseball season started a few minutes ago with Atlanta playing Philadelphia.  I’ve been working with Major League Baseball for more than a dozen years, and my (along with partners, of course) company, The Sports Scheduling Group, produces the schedules for MLB (our chief scheduler Kelly Easton does all the hard work, but I do […]

Test Gurobi yourself!

In keeping with an unusually awesome collection of comments, Daniel Fylstra of Frontline Systems wrote regarding the new linear/integer programming software from Gurobi (apologies for the self-linking, but, hey!, it’s my blog!): Although Gurobi Optimization plans to offer the Gurobi Solver directly (with its own APIs and tool set) starting in April, it’s available in […]

Check out ILOG’s DIALOG blog!

I am in Minneapolis, flying back to Pittsburgh after spending a couple days in Winnipeg for a memorial service for my Mom.  My Mom’s passing has a number of effects, large and small.  On the large side, my son Alexander has lost both his gradmothers in the past six months, which makes me sad:  every […]

American Express and Data Mining

I teach a data mining course here to our MBA students.  It is a popular course with about 70% of the students taking it at some point during their two years with us.  Since I am an operations research guy, I concentrate on the algorithms, but we spend a lot of time talk on the […]

Gurobi versus CPLEX benchmarks

Hans Mittelmann has released some benchmark results comparing CPLEX 11.2 with the first version of Gurobi‘s code (1.02) in both sequential and parallel (4 processor) mode.  Mosek’s sequential code is also included in the test.  Let me highlight some of the lines: ================================================================= s problem CPLEX1 GUROBI1 MOSEK1 CPLEX4 GUROBI4 —————————————————————– air04 9 18 49 […]