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.

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 ...

Excel issue

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I was doing some reporting on the results of a large, complex MIP model. I made the unfortunate error of having some spurious blank cells. W...
2 comments:
Friday, July 1, 2011

How bumblebees tackle the traveling salesman problem

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http://www.eurekalert.org/pub_releases/2011-06/qmuo-hbt062811.php

Sorting in GAMS

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This question came up during a workshop I taught at a large power company: I want to generate a number of load-duration and price-durat...
Thursday, June 30, 2011

Cplex polishing

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For some difficult large models, the Polishing facility in Cplex can sometimes do extremely well. This is an example: ...
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Erwin Kalvelagen
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