New to Mixed-Integer Programming or looking to level up your optimization skills?

Join Florian Wilhelm’s talk:
“Solving Hard Optimization Problems with Pyomo and HiGHS”
Learn how #Pyomo and #HiGHS combine to solve real-world MIP problems like scheduling and logistics.

Ideal for anyone in #Python, #OperationsResearch, and #OpenScience.

Check out our schedule: https://euroscipy.org/schedule/
Get your ticket here: https://euroscipy.org/tickets/

Hi everyone,

I feel like a re-introduction is long overdue!

My name is Anna, and I'm an assistant professor of Algorithmics at the Delft University of Technology, specialising in combinatorial optimisation, symbolic AI, constraint programming, propositional model counting, operations research and reasoning under uncertainty.

I'm a nerd, a feminist and a traveller, not always in that order.

In my spare time I like to hike and go geocaching. I try to go swing dancing a few times a week. I am a Trekkie. I want to learn how to draw. I am an Indomie and Obsidian enthusiast. Based in the Netherlands, I miss Belgium, Canada and Singapore.

Since a job in academia somehow always is personal, I have chosen to mix professional interactions with the more personal ones on this platform. At least for now. Obviously, my opinions do not necessarily reflect those of my employer yadiyadiyada.

Hope to keep interacting with you all!

Looking for a new opportunity!

I'm a data science generalist with 4+ years experience who brings breadth across analytics, operations research, and ML. Love solving messy and ambiguous business problems in this space with Python/R.

If you know of roles where breadth + problem-solving curiosity are valued, I’d be grateful for a boost, a referral or a nudge.

Message me here.

Most publications of the Vehicle Routing Problem only cover the tip of the iceberg.

Benchmarks and academic papers typically only handle vehicle capacity (CVRP) and time windows (VRPTW)

But production deployments also need to deal with many other requirements.

How to minimize driver costs for the Vehicle Routing Problem.

In this video, I cover dealing with a mixed fleet of employees and contractors. As well as overtime costs.

https://www.youtube.com/watch?v=2Foa68i9CSU

ETHICAL ANALYSIS: Nonviolent resistance to brutal dictators is morally superior to violent resistance. OPERATIONAL ANALYSIS: Nonviolent resistance to brutal dictators is more effective than armed resistance. #ethics #operationsresearch #evidencebased #bestpractices

Is there such a thing as communist operations research or is this a contradiction in terms? I'd imagine people using the simplex method, for instance, to figure out how to distribute their community's food, housing, etc. the most efficiently. A cursory search just yields discussions of large scale central management in the PRC.

Dear all,

This is the official account of the Constraints Journal (https://link.springer.com/journal/10601).

We will use this account to notify you of new publications, extra materials, CfPs and special issues.

We look forward to connecting with the CP community, and thank ACM for hosting.

Please boost, tnx!

#AcademicMastodon
#ArtificialIntelligence
#AutomatedReasoning
#CombinatorialAlgorithms
#ComputationalLogic
#ConstraintProgramming
#OperationsResearch
#Optimisation
#Satisfiability

Operations Research Sorbonnes University conference nov 2024

https://roadef.org/jfro/seminarday.php?id=51

(with slides)

Exciting news for the optimization community! The Bilevel Optimization Society (BOS) has officially been created: https://bileveloptimization.org/
If you're interested in bilevel optimization, join us as a member of BOS—it’s free to register!
#Bileveloptimization #Optimization #OperationsResearch

Are there personal / small community org applications of #operationsResearch?
Something that keeps popping into my mind is: #Cybersyn but #OCAP .
I guess #valueflows is kind of like this? But that's just a vocabulary.
(No, cryptocurrencies are not what I'm looking for.)

The 7 challenges to automate Field Service Routing with PlanningAI.

It's not just a Vehicle Routing Problem!

https://www.youtube.com/watch?v=UyCGpvuQ0Fo

Looking for like minded souls in the Mastoverse. Artist, math, data, teaching, research, - laconic operations! #Operationalresearch #operational_research #operationsResearch #Analytics #HealthDataScience

Can anybody in #OR
help me identify what this is called?
Suppose you want to minimize f(x) subject to x >= 0. Consider an iterative algorithm that takes steps in the direction of -x * grad f(x), where multiply is element-wise. What is this method called? It's not "Steepest Descent".
#optimization #operationsresearch

If your software generates unfair schedules, employees resign.

But what is a fair schedule?
And how do you measure fairness correctly?

Here's the secret formula for fairness in automated planning, explained in detail:
https://www.youtube.com/watch?v=tVMF0optFW4

Model testing saves time and improves outcomes. But it’s not always possible to perform tests in the same environment as your production runs. That’s where a test bench comes in. So what is a decision model test bench? And how can you use Nextmv as one? https://www.nextmv.io/blog/what-is-a-decision-model-test-bench-why-have-one-and-how-to-use-nextmv-as-one

Impressive results by Aldi Süd Germany presented at the #INFORMS Business Analytics Conference in the Edelman Competition @2024_analytics. #dataanalytics and #operationsresearch make a big difference #orms

Do you build AMPL decision models? Check out the latest integration that pairs all the goodness of AMPL with Nextmv’s DecisionOps platform: https://www.nextmv.io/blog/the-nextmv-ampl-integration-accelerating-decision-model-development-with-decisionops

CircleCI CTO hosts a conversation with our CEO about CI/CD, decision science, and more: https://www.youtube.com/watch?v=sIILS0WW5LA

Some highlights:
→ Where decision science and optimization fits into the world of AI
→ Connecting algorithm research/development with the software stack
→ Testing decision models and evaluating decision quality in CI/CD
→ Decision science for sustainability, network design, food delivery, and beyond.

A great listen that covers a lot of ground.