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Joseph Foutz
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optimization software for big MIP problem
Replied Nov. 11, 2009
optimization software for big MIP problem
Replied Nov. 11, 2009
Joseph Foutz's Page
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I'd take FrontLine's XPRESS over IBM's CPLEX. Personal choice. A variety of reasons, though a standout is that XPRESS will probably solve faster that CPLEX. I don't have any experience with very large problems like this, but I do have experience wit…
I think a completely automated tool would probably be too dangerous to actually use - too great a chance that the correction would change the meaning of something. (SQL especially.)
For finding errors, check out Micro Focus DevPartner Studio (forme…
I can compare the two in the context of the fake insurance argument. Fake auto insurance companies occasionally come along and they’re shut down quickly by the states. The same thing would happen with fake health insurance companies.
As for the sec…
Fake insurance wouldn't be an issue. Health insurance companies tend to be highly regulated at the state level, with stringent capital requirements. A company without a valid state insurance license would be shut down in a hurry. Corollary: automobi…
Yes, the generalized ordered logit model is specifically designed for ordered outcomes.
One big advantage of generalized ordered logit over multinomial logit is that generalized ordered logit doesn’t assume independence of irrelevant alternatives.…
The Generalized Ordered Logit model can handle non-parallel lines. I suspect that it’s not widely implemented in stats packages. In Stata use, “findit gologit2”.
If prediction is the only concern and you aren’t worried about parsimony or computatio…
For the packages you listed, EViews is the least expensive, and I might venture a guess that SPSS is the most robust in terms of model autofitting.
SAS: $6K+ first year, $2K+ each additional year (estimates for Base & ETS)
SPSS: $2,798 (Base & Fore…
First I’d say to try JMulTi. It’s free and easy to use, so if it can accomplish what you want to accomplish...
As far as commercial software: Stata, Stata, and then maybe Stata.
I’ve cited Greene and Tsay already. Arup (below) cites Hamilton, which I used in a time series class. It’s a pain to read. And odd – example, where anyone else on earth would say “matrix form” he says “state space form” – which by some miracle doesn…
Small businesses are horribly underserved in this market. The thing is, it wouldn’t be hard to offer them some basic analytics. Most of them are using off the shelf accounting systems that have structured data storage and good SDKs. It wouldn’t be h…
Manta says $20M/Year. I'm not 100% confident in Manta's numbers, but they're generally in the ballpark.
http://www.manta.com/company/mmg3l8s
BTW, how large is StatSoft? I cannot find any info on their web page?
They must be a large company - they have 35 offices on all continents and a Google map that gets you directly to every office, neat.
SAS basically restricts you to the statistical routines that they’ve developed. If you license Proc IML, sometimes you can cobble something of your own together, but that’s the limit. So there’s no real way to go off on your own to follow, say, the…
Yes, because SAS is just a programming language and you can of course program interfaces to other applications; I know that there are also import/export facilities to move data in and out of SAS.
Still, the SAS programming language is a hold-over f…
Profile Information
- Field of Expertise:
- Data Mining
- Your Company:
- Monsterslayer, Inc.
- Industry:
- Wholesale distribution / precious metals
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