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Posts by Jeff Linderoth

Speeding Up Mixed-Integer Programming Solvers with Sparse Learning for Branching – Optimization Online

Nemhauser alert:

optimization-online.org/2026/04/spee...

2 weeks ago 8 0 0 0

Some science cuts in Trump's proposed FY27 budget

❌ NIH: -$5B, including all of NIEHS, NIMHD, FIC & NCCIH.
❌ EPA: -4.6B
❌ NSF: -3.8B
❌ NASA Science: -3.4 Billion
❌ NOAA: -1.8B, including the entire Oceanic and Atmospheric Research budget ($605M)
❌ AHRQ: All of it. -$296M, 100%

And there's more.

2 weeks ago 145 129 8 21

If there is one thing I’ve learned is that if a project is struggling, adding a bunch of new trainees always helps, especially if they’re being paid and you’re not, and they’re the reason you’re not being paid

4 weeks ago 2562 635 81 19
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Excited to have @thserra.bsky.social here at UW Madison for SILO seminar series.

1 month ago 11 2 0 0
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📢 Plenary speakers for #ISMP2027

We are pleased to announce the plenaries for the 26th International Symposium on Mathematical Programming:

Daniel Bienstock
Jim Luedtke @optimizer.bsky.social
Thomas Rothvoss
Katya Scheinberg
Defeng Sun

🗓️ July 25–30, 2027

📍Amsterdam
🔗 ismp2027.mathopt.nl

#MOS

1 month ago 13 7 0 1

I am expecting you to start with a joke next week. 😀

1 month ago 2 0 1 0

You’re on fire!🔥

1 month ago 2 0 0 0

Any more misleading than having an empty BOUNDS section in your MPS file and having the lower bounds of your variables be 0?

1 month ago 1 0 1 0

I wouldn't blame scipy. Default lower bound of zero has been the convention of LP since the dawn of LP.

1 month ago 4 0 1 0
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And no SDP, even better! 😵‍💫

2 months ago 0 0 1 0

I come to Bluesky for all my Optimization and Sewing news.

2 months ago 1 0 0 0

👇🏼👇🏼👇🏼👇🏼

2 months ago 6 2 0 0

This is an intriguing paper with numerous examples of using an LLM to generate formal proofs and ideas, and a nice cookbook for how to do it. Refreshingly, the paper stays away from hype and as far as possible states very clearly how the LLMs are used and the key nature of human-AI interaction.

2 months ago 14 6 0 0

Oh no. This is so sad. We all were at Georgia Tech together. Kelly was wonderful. Heartfelt condolences to Todd. :-(

2 months ago 1 0 0 0

So much for the Provost search.

2 months ago 4 0 1 0

Wait wut?!?!?!?

2 months ago 0 0 1 0
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Backing PDHG into a Corner Recent enhancements to the Primal-Dual Hybrid Gradient (PDHG) algorithm have enabled GPUs to efficiently solve large linear programming problems, often faster than the long-dominant simplex and ...

Another article by Ed Rothberg on PDHG.
arxiv.org/abs/2511.13894

4 months ago 9 1 1 0

This is an amazing work.

5 months ago 1 0 0 0

I was there too. But I was in Grad School. 😜

5 months ago 1 0 0 0
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Assistant/Associate/Full Professor in Industrial & Systems Engineering (RISE AI) - Madison, Wisconsin, United States Current Employees: If you are currently employed at any of the Universities of Wisconsin, log in to Workday to apply through the internal application process.Job Category:FacultyEmployment Type:Regula...

We are hiring two faculty positions in ISyE at UW-Madison
Please come and join us!

jobs.wisc.edu/jobs/assista...

jobs.wisc.edu/jobs/assista...

6 months ago 11 3 0 0
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@christosargyrop.bsky.social

Kale sales and autism

www.wmbriggs.com/post/58413/

6 months ago 142 28 14 4
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I’m an award-winning mathematician. Trump just cut my funding. The “Mozart of Math” tried to stay out of politics. Then it came for his research.

I wrote an op-ed on the world-class STEM research ecosystem in the United States, and how this ecosystem is now under attack on multiple fronts by the current administration: newsletter.ofthebrave.org/p/im-an-awar...

8 months ago 791 325 21 32
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The Irrational Decision How the computer revolution shaped our conception of rationality—and why human problems require solutions rooted in human intuition, morality, and judgment

I’m excited to announce that my new book, _The Irrational Decision_, is now available for pre-order from Princeton University Press.

8 months ago 121 31 8 7
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FICO Xpress Optimization Surpasses AlphaEvolve’s Achievements FICO’s global optimization solver outperforms Gemini AI-powered AlphaEvolve coding agent by improving solutions for complex, constrained math problems

Timo Berthold has a post called “FICO Xpress Optimization Surpasses AlphaEvolve’s Achievements” www.fico.com/blogs/best-g... #orms

10 months ago 14 5 0 1
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Weeping with joy.✌️

10 months ago 7 1 0 0

Three things made the US a rich and powerful nation: the rule of law, its science & innovation system, and openness to foreign talent. Remarkable how Trump has taken a sledgehammer to all three. No enemy of this country could do more.

10 months ago 11411 3746 297 315

Please erase!!!

10 months ago 3 0 1 0
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If a foreign adversary snuck into our Federal budget and cut science research and education the way we’re cutting it ourselves — strategically undermining America’s long-term health, wealth, and security — we would likely consider it an act of war.

11 months ago 33510 8633 1175 543

This is a great thread on a great blog post.

11 months ago 4 1 0 0
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“I can…assure you that were this a Republican president…targeting Democrats, I at least would speak out just as vigorously against it because if we are going to respect rule of law, the apparatus of the federal government cannot and should not be used as a partisan tool to bludgeon your enemies."

1 year ago 2302 695 163 112