Yet Another Math Programming Consultant

I am a full-time consultant and provide services related to the design, implementation and deployment of mathematical programming, optimization and data-science applications. I also teach courses and workshops. Usually I cannot blog about projects I am doing, but there are many technical notes I'd like to share. Not in the least so I have an easy way to search and find them again myself. You can reach me at erwin@amsterdamoptimization.com.

Monday, August 22, 2011

More on network models (2)

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Re: http://yetanothermathprogrammingconsultant.blogspot.com/2011/08/more-on-network-models.html . What if you go bigger? Here some results...

Shipping problem

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I am starting to work on a problem that looks like a shipping problem I worked on earlier: garments (shirts) are sent from China to stores i...
Monday, August 15, 2011

Bin Packing

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For pure bin packing problems some really good heuristics exist. For the problem illustrated in http://www.developerfusion.com/article/5540/...
Monday, August 1, 2011

More on network models

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I received some additional questions on solving some very large network models. Basically we used the formulation presented here: http://yet...
Thursday, July 28, 2011

Scheduling of TV Advertisement: Theory vs Practice

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I am working on a model for scheduling TV advertisements. Looking at the paper: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.37....
5 comments:
Thursday, July 21, 2011

Pyomo

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For a thoughtful comment on the design of Python based modeling system see: http://yetanothermathprogrammingconsultant.blogspot.com/2011/04/...
2 comments:

Patent Application

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One of my clients is applying for a patent on a model I helped them with. I am mentioned as co-inventor. That is mostly just an ego-booster ...
Wednesday, July 6, 2011

Dashboards in Powerpoint

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I have built several “dashboards”  in Excel (e.g. http://yetanothermathprogrammingconsultant.blogspot.com/2010/01/excel-reporting.html ), bu...
Tuesday, July 5, 2011

Min sum or min num

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In an advertisement model we may have to deal with underdelivery: the delivery of less impressions, visitors, GRPs than contractually agree...

GAMS: GDXDUMP and Equations

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There is a fairly deep issue when comparing GDX files if one of the GDX files has the following properties: It is produced by GDXDUMP ...
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Erwin Kalvelagen
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