#ORMs

Ukraine’s Lesson for Trump: Military Dominance Opens Waterways Kyiv pushed Russia’s Black Sea Fleet back from its main maritime export channel, safeguarding critical exports of grain.

1 day ago

www.wsj.com/world/ukrain... @informs.bsky.social press release on our #orms paper on #Ukraine in #wartime and agricultural trade co-authored with an @isenbergumass.bsky.social PhD student & colleagues at the Kyiv School of Economics www.informs.org/News-Room/IN...

3 0 0 0

Austin Buchanan

@austinlbuchanan.bsky.social

2 days ago

For all the LP and MIP enthusiasts out there #orms

3 0 0 0

6 days ago

The @informs.bsky.social Analytics Conference begins in 10 days and I'm very excited. #INFORMS requires the speaker slide decks (way) ahead of time and I have forwarded mine. #orms #analytics #tradewars #gametheory #supplychains #networks

4 1 0 0

1 week ago

Why is it that some #orms journals have already published the August 2026 issue whereas others (of another pubisher) just recently published the February 2026 issue. It is now the month of April.

0 0 0 0

1 week ago

Yesterday, in my #orms PhD class @isenbergumass.bsky.social, I reprised the Distinguished Engineering Lecture on #agricultural #supplychain #networks that I gave at Purdue University & we had a superb discussion with lots of brainstorming and research ideas. I love working with creative students.

2 0 0 0

Opinion | From lobster to laptops, organized crime is targeting U.S. freight Cargo theft costs the U.S. trucking industry a staggering $18 million every day.

1 week ago

Freight theft continues to be a big deal - Thanks to Donna Lemm for this OpEd in @washingtonpost.com www.washingtonpost.com/opinions/202... We published an #orms paper on #gametheory and #security #investments for high value cargo www.sciencedirect.com/science/arti...

0 0 0 0

Mixed Integer Programming Workshop 2026

1 week ago

Delighted to be hosting Dr. Les Servi, @informs.bsky.social Board Member, in our @umassinforms.bsky.social Speaker Series on April 10! Dr. Servi's book, "Mission Dependency Network Analysis," was recently published by @springernature.com. #orms #networks #missionsystems

2 0 0 0

Aleksandr Kazachkov

@akazachk.bsky.social

1 week ago

There were ~ eight* elite weeks left before #mip2026 but soon it will be the final four. Hope to see you all May 18-21 at @uconn.bsky.social (Stamford campus). Early registration and the **flash talks** submission deadline are April 15. See details at mixedinteger.org/2026. #orms

* it’s actually 7

1 0 0 0

The Experience of Giving a Distinguished Engineering Lecture at Purdue University Was Extraordinary - Thank You! Last evening I returned from a whirlwind trip to Purdue University, where I was deeply honored to deliver a Distinguished Engineering Lectur...

1 week ago

New #orblog: The Experience of Giving a Distinguished Engineering Lecture at Purdue University was Extraordinary - Thank You! annanagurney.blogspot.com/2026/03/the-... #supplychains #agriculture #networks #industrialengineering #orms

7 2 0 0

1 week ago

a zoom window, with four participants: Guy Desaulniers, Marco Lübbecke, Jean Bertrand Gauthier, and Jacques Desrosiers

it is rare that we four meet - but we had something to celebrate

#orms

link.springer.com/book/10.1007...

9 0 0 0

@mluebbecke.mas.to.ap.brid.gy

1 week ago

a zoom window, with four participants: Guy Desaulniers, Marco Lübbecke, Jean Bertrand Gauthier, and Jacques Desrosiers

it is rare that we four meet - but we had something to celebrate

#orms

link.springer.com/book/10.1007/978-3-031-9...

0 1 0 0

1 week ago

DC Projects – ALMOA

13 PhD positions in in applied #maths, #orms, engineering, or CS within the ALMOA consortium

-> study applications of European and international relevance in areas such as sustainable energy systems, green gogistics, etc.

almoa.aau.at?page_id=53

5 4 0 0

@mluebbecke.mas.to.ap.brid.gy

1 week ago

On the number of degenerate simplex pivots - Mathematical Programming The simplex algorithm is one of the most popular algorithms to solve linear programs (LPs). Starting at an extreme point solution of an LP, it performs a sequence of basis exchanges (called pivots) that allows one to move to a better extreme point along an improving edge-direction of the underlying polyhedron. A key issue in the simplex algorithm’s performance is degeneracy, which may lead to a (potentially long) sequence of basis exchanges which do not change the current extreme point solution. In this paper, we prove that one can employ any improving feasible direction at an extreme point to limit the number of consecutive degenerate pivots that the simplex algorithm performs to $$n-m-1$$ n - m - 1 , where n is the number of variables and m is the number of equality constraints of a given LP in standard equality form.

on the number of degenerate simplex pivots

link.springer.com/article/10.1007/s10107-0...

#orms

0 1 0 0

On the number of degenerate simplex pivots - Mathematical Programming The simplex algorithm is one of the most popular algorithms to solve linear programs (LPs). Starting at an extreme point solution of an LP, it performs a sequence of basis exchanges (called pivots) th...

1 week ago

on the number of degenerate simplex pivots

link.springer.com/article/10.1...

#orms

4 0 0 0

A first look at the Nextmv MCP Server This release of the Nextmv MCP Server previews early functionality for interacting with Nextmv decision apps via AI agents in a safe, consistent, and reliable way.

1 week ago

We’ve shipped a preview release of the Nextmv MCP Server. Check it out: hubs.la/Q048xDwD0

#decisionOps #decisionscience #decisionintelligence #orms #ai #datascience #claude #mcp

1 0 0 0

In conversation with Pyomo and HiGHS: Open source in OR How are open source projects being used today? How should the community think about adoption and participation? Hear from members of the Pyomo and HiGHS teams.

1 week ago

In conversation about open source in OR: Research vs commercial software, open source applications in the wild, early project choices for HiGHS and #Pyomo, and what's next on the horizon: hubs.la/Q0487xhn0

#orms #decisionscience #decisionintelligence #decisionOps #opensource #datascience

1 0 0 0

Martin Schmidt

@schmaidt.bsky.social

1 week ago

ICBO 2026

The #ICBO2026 abstract submission deadline is coming soon:

bileveloptimization.org/icbo/2026/in...

I hope we meet later this year in Pittsburgh!

#orms #conference #bilevel #optimization

2 1 0 0

2 weeks ago

Spending part of my Saturday of spring break reviewing articles submitted to #orms journals. One review I just completed was for a paper I thoroughly enjoyed. Seeing originality and creativity in research and scholarship makes my day.

2 0 0 0

Kent meningitis outbreak triggers surge in UK vaccine demand, policy debate Young people in southeast England and beyond are lining up for the meningitis B vaccine after an outbreak killed two people, sparking supply warnings from pharmacies and raising broader questions abo...

2 weeks ago

In academia we are so connected - thinking of my #orms friends at the University of Kent and beyond www.reuters.com/business/hea... in 2017, @umassamherst.bsky.social had a meningitis B outbreak with two cases.

3 0 1 0

Karmel S. Shehadeh

@karmelshehadeh.bsky.social

2 weeks ago

The trade-off between optimism and pessimism in multi-resource planning and allocation under demand uncertainty We study a stochastic multi-resource planning and allocation problem (SRAP) with uncertain demand. Given sets of demand nodes and multiple resource ty…

New solo-authored paper, the trade-off between optimism and pessimism in multi-resource planning and allocation under demand uncertainty, just came out in EJOR. You can access it here: www.sciencedirect.com/science/arti...
#orms

3 0 0 0

A new Nextmv CLI A simple one-line command unlocks everything you need for seamless DecisionOps-powered model development from your local machine to remote infra for testing and production runs.

2 weeks ago

👋 Hi to the new Nextmv CLI! A simple one-line command unlocks everything you need to go from local decision engine development to remote infra for testing and production runs: hubs.la/Q047xhMS0

#decisionOps #orms #decisionintelligence #decisionscience

0 0 0 0

Yasmine Beck

@yasminebeck.bsky.social

3 weeks ago

“MIP approaches are a dead end.”

That‘s a reviewer comment I recently received on a paper about traffic modeling.

So, naturally, I teamed up to write another MIP paper on traffic networks. Here’s our new #ORMS preprint: optimization-online.org?p=34014

Dead end? Judge for yourselves 😉

15 1 0 0

Austin Buchanan

@austinlbuchanan.bsky.social

3 weeks ago

To all the linear programming enthusiasts out there, how are you gearing up for dual variables day? #orms

6 1 0 0

How can you manage decision model versions on Nextmv? Let us count the ways… An overview of approaches for managing model versions for testing, roll out, roll back, and provisioning by geographic region, client, or development environment in the context of DecisionOps.

3 weeks ago

How can you manage decision model versions on Nextmv? 🤔 Let us count the ways... 🧐

Tour examples that manage model versions by dev environment, geographic region, client/customer, and shadow mode: www.nextmv.io/blog/how-can...

#orms #decisionOps #decisionscience #datascience

0 0 0 0

@austinlbuchanan.bsky.social

3 weeks ago

Coincidentally, we have published a paper with an @isenbergumass.bsky.social PhD student & a colleague in Ukraine on war risk insurance with the focus being on integrating crop and cargo (as in maritime) insurance under war conditions as in Ukraine onlinelibrary.wiley.com/doi/10.1111/... . #orms

5 0 1 0

Austin Buchanan

4 weeks ago

Okay, who’s gonna MIP it first? And make a web interface? #orms

3 0 0 0

In conversation: Building stakeholder trust in decision intelligence Human review and feedback is part of any good decision workflow. Learn what decision algorithm developers and teams can do to increase trust and build confidence.

4 weeks ago

How to build trust in OR - Insights from Toyota, Hertz, Stitch Fix, and more: hubs.la/Q045TJPk0

→ “Once users start referring to it as ‘our algorithm'...you’re in business.”

#decisionOps #orms #datascience

0 0 0 0

1 month ago

Great to see a paper co-authored by a former PhD student of mine, now Dr. Ding Zhang, wth Dr. Ben Lev, and co-authors in this issue. #EJOR is one of my FAVORITE #orms journals.

2 0 0 0