Haroldo G. Santos
@unxusrSenior Applied Scientist at Amazon. Opinions are my own. Free software enthusiast passionate about old computers and lasagna :)
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South of Brazil is an apocalyptic scenario now, any help is appreciated !
My heart goes out to the people affected by the floods in Rio Grande do Sul, Brazil. If you can help, please donate: 🔗brazilfoundation.org/en/help-rio-gr… 🔗instagram.com/governo_rs/p/C… 🔗apoia.se/enchentesrs 🔗vakinha.com.br/vaquinha/a-mai… 🔗sosenchentes.rs.gov.br/inicial #RioGrandedoSul 🙏 #PortoAlegre
Subject to: Ted Ralphs (Lehigh University), youtu.be/7UTT2FAaMPo, #orms #optimization #Analytics #software #rush @TedRalphs @coin_or @LehighU
Subject to: Haroldo G. Santos (Amazon), youtu.be/ngsP_XPSS4o, #orms #optimization #Analytics #logistics #python_mip #opensource @unxusr @amazon @coin_or
"Without financial support, we are struggling to maintain widely used COIN-OR projects, such as Cbc, Clp and Ipopt." coin-or.org/2021/12/15/fut…
Python-MIP talk included, by @tuliotoffolo
What is the state of #CP modeling in #Python? And what are successful approaches in the wider #constraint community? How can we learn from each other and build on each other? 4 exciting virtual talks across #CP #OR #MIP #SAT communities, next week! people.cs.kuleuven.be/~tias.guns/con…
Amazon & MIT will run a vehicle routing contest with a top prize of $100,000! How best to combine the TSP with drivers' knowledge of the local area? routingchallenge.mit.edu amazon.science/blog/amazon-mi…
My paper with @ssouzabrito : "Preprocessing and cutting planes with conflict graphs" published in Computers & OR is available for sharing authors.elsevier.com/c/1cMgU15N8SCu… :D
Jair Bolsonaro, President of Brazil, has been named the Organized Crime and Corruption Reporting Project’s 2020 Person of the Year for his role in promoting organized crime and corruption.
Python-MIP 1.13 released, bug fix release, please upgrade: github.com/coin-or/python…
Python-MIP 1.12 released ! bit.ly/3k678Iy added ability to read and write optimal basis files (.bas) in cbc small fixes for gurobi interface and cbc
Python-MIP 1.11 released ! rb.gy/bfkvuc . Additional cut generators, query of instance features for ML based methods and the usual documentation improvements.
Python-MIP 1.10.0 released! New Model method: clique_merge, which merges constraints of conflicting variables (usually set packing) to produce a more compact and stronger formulation. Two new stopping criteria were added: max nodes/seconds without improving the incumbent solution
Wow, really nice !
New JIFs just released. 2019 Impact Factor for the International Transactions in Operational Research is 2.987. #itor is now ranked 23rd among 83 #orms journals. Congrats to all authors and thanks to all referees and associate editors!
Python-MIP 1.9.1: small fix for optimizing models with Special Ordered Sets (SOS) and only continuous vars. Much improved documentation and examples for Type 1 and Type 2 SOS
For those interested in Python-MIP, tomorrow (Wednesday) I'll give a talk "On the design of Python-MIP: Why another Python optimization library?" at Sage Math days researchseminars.org/seminar/SageDa…
Global Virtual SageDays 109, May 27–29, 2020. A 50-hour online event for the #Math #Python #OpenSource community. Free registration at wiki.sagemath.org/days109 @SageMath #SageMath
Python-MIP 1.9 released! the conflict graph of a MIP, can now be queried; initial (optional) support for numpy tensors; compatibility fixes for the MacOS binaries; speedup for querying solutions in the callbacks and documentation improvements
Some say that voted on Bolsonaro for the economy.
The Brazilian real is already the worst performing currency in the world this year, but analysts and investors warn it could still fall further on.ft.com/2TBCjRt
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Aleksandr Kazachkov
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Claudia Archetti
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Claudia D'Ambrosio
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Ted Ralphs
@TedRalphs -
Alice Raffaele
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Austin Buchanan
@AustinLBuchanan -
Pietro Belotti
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Erling Andersen
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