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Category: Operations Research

AequilibraE & Google OR-Tools

Posted 2020-03-312020-03-31 pedroPosted in AequilibraE, GIS, Operations Research, Python, Software

I have been using the routing tools inside Google OR-Tools for quite a while now, and I must say that it behaves incredibly well in most cases I tested. The procedures there are not the best you will find in the Operations Research world (neither in time nor in objective function results), but they are […]

Python’s Traffic assignment module (All or Nothing)

Posted 2013-10-182020-04-10 pedro11 CommentsPosted in Operations Research, Python

WARNING: THIS CODE HAS BEEN DEPRECATED. FOR THE NEW STUFF GO TO https://github.com/aequilibrae/aequilibrae Lately, I have been dealing a lot with traffic assignment problems of several types, but mostly All or Nothing and user equilibrium in some not so large networks. It is true that I could use something like Cube or TransCad, but I […]

Shortest Path – Djikstra in MS Excel

Posted 2013-03-122020-04-10 pedroPosted in Excel, Operations Research

It was not hard to decide which would be the first post of this blog. More than an useful algorithm, it presents a good example of how simple OR tools can bring big improvements for a company’s process. Back in 2005, when I took a course in algorithm implementation with Prof. Claudio Cunha, I was […]

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