Final release candidate 10.8.1.rc3 of passagemath, the pip-installable modularized fork of #SageMath.
github.com/passagemath/...
#Python #OpenSource #Mathematics #orms
Release passagemath-10.8.1.rc3...
#orms
The #REMASC and #AGEAS #FlandersMake projects have a strong presence at the 2026 Flanders Make Scientific Conference in Sint-Katelijne-Waver at Campus De Nayer. It’s a great event for scientific networking. #FlandersMake #ORMS #CVAMO #Forecasting #UGentFEB
Today, we are at the 2026 Flanders Make Scientific Conference in Sint-Katelijne-Waver at Campus de Naeyer. CVAMO has several posters at the event. It’s a great event for scientific networking. #FlandersMake #ORMS #MANPROCAD #REMASC #CVAMO #UGentFEB
SCIP #optimization suite 10.0 is out!
it comes with GCG 4.0.0, PaPILO 3.0.0, SCIP 10.0.0, SoPlex 8.0.0, UG 1.0.0 (no longer beta), and ZIMPL 3.7.0.
there is a 50+ pages release report https://optimization-online.org/2025/11/the-scip-optimization-suite-10-0/
enjoy!
HT @svigerske #orms
full professorship in industrial mathematics at RWTH in Aachen
expected: distinguished expertise and visible research agenda in applied #maths with implementation-oriented industrial relevance
research topics include [....] optimization!
more info: https://berufungsportal.rwth-aachen.de/
[new paper] “Political districting to maximize whole counties” coauthored with Maral Shahmizad
We propose a combinatorial Benders decomposition algorithm, solving (nearly) all instances across the USA.
Our approach provides intuitive optimality proofs suitable for courts/laypeople: at least one county must be split in each enclosed region. #orms
#ORMS #Analytics quietly powers decisions in healthcare, supply chains & beyond... yet is largely invisible to the public. Drawing inspiration from the growth of #ML, we outline 10 key actions to help move this status quo: https://pubsonline.informs.org/doi/full/10.1287/ijds.2025.0076
What else would you suggest?
Jury simulation using SimPy
In this article we design and build a SimPy simulation model of a jury summoning process The goal is to reduce the number of people summoned for jury service.
Simulation is often seen as an easy way to model to situation. It is not. This model highlights a key lesson for simulation modelling in general: details matter, sometimes a lot.
#orms #Python
https://www.solvermax.com/blog/jury-simulation-using-simpy
Efficient jury empanelling: Respecting people's time
This article is inspired by a recent experience of being summoned for jury service. We describe a simulation model of the jury selection process. The goal is to explore how the needs of the justice system can be met while also respecting the time of people who report for jury service. Specifically, we want to see if the number of people summoned can be reduced while ensuring that sufficient people are available for the scheduled trials.
Jury service is an important civic duty, providing a way for people to directly participate in upholding the law and contribute to their community. But the jury service process, like much of the justice system, is designed around the needs of the system rather than the needs of the people it serves.
#orms #Python
https://www.solvermax.com/blog/efficient-jury-empanelling-respecting-peoples-time
Last week, the 2025 Edition of our “Current Data Science for Business Students Meet Alumni” Event took place at the Facultyof Economics and Business Administration (Ghent University). #ORMS #DataScience #DataAnalytics #Python #ApacheSpark #SQL
final day of our 2025 school on column generation in Paris #orms
The muffin problem: A slice of recreational maths
In this article, we solve 'The Muffin Problem' which is a recreational maths puzzle that is simple to state but hard to solve in general.
The goal of the muffin problem is to divide a number of muffins equally between a number of students, maximizing the size of the smallest piece that any student receives. Some cases are trivial, while some others are easy. But once we have more than a few muffins and/or students, this becomes a difficult problem to solve.
We use a Mixed Integer Linear Program to solve the problem. Along the way we play with some parallel computing to substantially reduce the run time, and throw in some symmetry-breaking constraints and objective function bounds to help the solver.
#orms #Python
https://www.solvermax.com/blog/the-muffin-problem-a-slice-of-recreational-maths
Pivot irrigators in a 100 acre field
We formulate a non-linear, non-convex model for optimizing the layout of centre-pivot irrigators in a field. Several free and commercial solvers fail to find good solutions. Then we try the MINLP-BB solver via NEOS using a multi-start technique.
Can it find an optimal solution?
#python #orms
https://www.solvermax.com/blog/pivot-irrigators-in-a-100-acre-field
I constantly see folks select ActiveRecord when going the #notRails route. I just don’t understand it when there are benchmarks like the following: https://ideia.me/benchmarking-ruby-orms
Job opening at TU Graz: Full Professor Position for Computational Discrete Mathematics #orms
https://jobs.tugraz.at/en/jobs/dec7b342-9f50-f780-b335-67c226f4d322
Locational marginal pricing of potatoes
We apply Locational Marginal Pricing (LMP) to the supply of potatoes. The article describes the model, calculation of LMPs, and scenarios for how the suppliers and contractors may respond to the price signals.
#orms #pyomo
https://www.solvermax.com/blog/locational-marginal-pricing-of-potatoes
🚀 Gave a talk at the EURO OSS Seminar Series on "Data-Driven Algorithm Design and Verification for Parametric Convex Optimization"!
🎥 Recording: https://euroorml.euro-online.org/
Big thanks to Dolores Romero Morales for the invitation! 🙌 #MachineLearning #Optimization #ORMS
Jacques Desrosiers delivered the sad news that an #orms giant has left us forever:
François Soumis passed away last night. The depot of this last vehicle tour is in heaven.
Permission granted: A role mining model
We implement a recently published role mining model using both constraint programming and mixed integer linear programming, then compare their relative performance while solving several examples.
https://www.solvermax.com/blog/permission-granted-a-role-mining-model
#orms #pyomo #ortools #python
New item in our list of #orms resources:
Collection of videos from Associate Professor Alberto Del Pia, University of Wisconsin-Madison.
There are around 100 videos, collated into playlists relating to specific optimization papers taught at the university.
https://www.solvermax.com/resources/links/online-courses/optimization-nation
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