Stefan Neumann

Stefan Neumann

@neumannstefan.com

Assistant professor @ TU Wien, associate faculty @ Complexity Science Hub. Previously: KTH, Brown, Uni Wien. I study algorithms for data science and social-network analysis. Connecting theory 🤝 practice. More info: https://neumannstefan.com.

443 followers241 following136 posts

This is such a good point which I believe way too few people are making. When famous people like Tao complain that for AI-generated proofs they cannot invite experts to give a talk anymore, well, this is the reality for a very large majority of maths/TCS professors right now.

Izabella Laba 🇨🇦@ijlaba.bsky.social

Short thread asking @nytimes.com and other MSM to stop interviewing the same small handful of people every time something math-related comes up. Mathematicians are dismayed when AI scoops them on the results? How about look for advice from someone familiar with getting scooped and outpowered.

It is very similar for people who have a hard time attending conferences due to child care, limited funding, high teaching loads, etc. Again, this set of people contains a very large number of maths/TCS researchers. But we mostly hear the takes from famous people from the best universities.

Stefan Neumann reposted

Replying to @ijlaba.bsky.social

Talk to someone at a small non-flagship state university, with a 3-3 or 4-4 teaching load, who still - somehow - maintains a research program. They are grossly outpowered by R1 professors with large grants and low teaching load. And yet, they manage.

Stefan Neumann reposted

Short thread asking @nytimes.com and other MSM to stop interviewing the same small handful of people every time something math-related comes up. Mathematicians are dismayed when AI scoops them on the results? How about look for advice from someone familiar with getting scooped and outpowered.

The New York Times@nytimes.com

Terence Tao is typically described as one of the world’s greatest living mathematicians. He is on the front lines of a debate about artificial intelligence and the future of his field.

These days we are talking a lot about the exposition of theoretical computer science results. In the newest column of "TCS on the Web" it was my pleasure to talk to the makers of the great YouTube channel "polylog": Václav Rozhoň, Václav Volhejn, Richard Hladík and Tomáš Sláma.

New bulletin of the @eatcs.bsky.social is up: bulletin.eatcs.org/index.php/be...

They make cool TCS results accessible to a wide audience and their channel has more than 100,000 subscribers and their videos have been viewed more than 7 million views. I encourage you to check out the interview and also the great YouTube videos.

Quick thought experiment: Imagine when OpenAI dropped their math results, all papers and proofs had all been entirely correct and neatly written up (by the AI). What would we have done then? Bowed?

“On average, each result used three hours of ChatGPT Pro thinking compute with [an unreleased internal OpenAI model].” Mind-blowing, especially when considering that models with these capacities will be publicly available in (at most?) a year or so.

Stefan Neumann@neumannstefan.com

So, the OpenAI results include: - A proof the unique games conjecture - L = RL - Matrix multiplication in n^(9/4) time - Almost-linear-time exact matching - Integer multiplication faster than n log n - Quasipolynomial algorithms for mean-payoff and parity games Overview: github.com/openai/math/...

Stefan Neumann reposted

Stefan Neumann reposted

Some teaching applied more stuff adapt by encouraging students to use LLMs and raising expectations from course projects. For mathier classes like undergrad algorithms, I mostly rely more heavily on in-person exams :-/ Alternatives? What should a theory class project with LLM look like?

Stefan Neumann reposted

Looking for takes by TCS (Theoretical Computer Science) senior academics/researchers about AI and their discipline/research values. E.g., essays, detailed blog posts. (Specifically TCS: there is a lot from Maths, but while adjacent there are enough differences in culture it's worth distinguishing)

When you read the replies (also on Twitter), a lot of people want a cap on the number of submissions per author. Is this really such a big problem? From what I have seen for TMLR and ICLR (if I remember correctly), the problem is rather that now there *a lot* of newcomers who submit one slop paper.

Andrew Gordon Wilson@andrewgwils.bsky.social

I'm a Program Chair for ICML 2027. We'd love any creative suggestions for a great conference! How to manage the explosion of AI slop and insane submission growth? How to manage reviewing? How to incentivize high quality creative work? How to reduce bureaucracy and overhead?

Stefan Neumann reposted

Replying to @andrewgwils.bsky.social

I propose that top reviewers who are authors of borderline papers should have an increased chance to get these papers accepted. This is a much bigger incentive than free registrations, because it has a much more direct impact on people’s careers.

Stefan Neumann reposted

I'm deeply concerned by posts from colleagues and friends that go beyond criticism of work toward public shaming of authors. We need to debate today's standards, and criticism is part of research. But we can do that without personal attacks in a forum that invites pile-ons.

I wanted to submit a grant proposal this week and ended up not doing it precisely because of this. I have no idea how in a project that, say, lasts from 2027 to 2032, I can promise results that cannot be achieved by an LLM in 2031 with one person prompting.

Ragnar {Groot Koerkamp}@curiouscoding.nl

Writing TCS grant proposals is gonna be fun when you can just give the thing to an LLM and get everything done in a few days, and at the same time you have to convince the committee that no, this is not to much work for 1 person for 4 years.

Probably the smart/professional move is just to ignore this. I also considered writing that by the end of the project we will have an AI prompt/harness that automatically generates results of type studied in the proposal. I think this is the way to go but too controversial now to get funded.

OK, I am back from holiday. I spent most of my time offline (hiking in Austria is great!) but also did quite a bit of reflection on academia and AI. I will have some things to say. One of my intensions is to be more active on social media and I will also start a blog.

Stefan Neumann reposted

“I got Claude Fable to do this analysis and write this paper. I’m posting it here, but I haven’t checked it yet.” WELL CHECK IT THEN. WHY ARE YOU POSTING THINGS YOU CAN’T BE BOTHERED TO READ.

For the summer issue of the EATCS Bulletin, it was my pleasure to talk to authors of the Decentralized Thoughts blog: Ittai Abraham, Kartik Nayak, Ling Ren, and Alin Tomescu. I really like their opinions on how blogs can do more than papers and the theory and practice of blockchains.

the Summer issue of the EATCS Bulletin is now available! eatcs.org/images/bulle...

Apply to work with Alexander! Alexander already joined our TU Wien Informatics faculty retreat in February and he is one of my favorite colleagues — and also a great PhD supervisor. TU Wien is ranked 11th in Europe on CSRankings. The combination with CSH is super great for interdisciplinary work.

Alexander Hoyle@alexanderhoyle.bsky.social

Very delighted to announce the next step in my career! After my postdoc at ETH, I will begin a joint appointment at TU Wien and the Complexity Science Hub Vienna as an Assistant Professor in NLP. I'm so grateful to all who helped me along the way And yes, I’m hiring! Details on PhD positions below

Stefan Neumann reposted

Replying to @wtgowers.bsky.social

It's not necessarily the end of mathematics, but it's hard to see how the all the social structures that support the subject will be able to avoid major disruption over the next few years.

We have more than 80 computer science professors, including 20+ assistant professors and young full professors. We are 11th on CSRankings in Europe, among the top 4 universities in the German speaking countries. We have some amazing students and Vienna is a great city. Apply, it's good here!

Stefan Neumann reposted

Panos Ipeirotis (NYU): "How I started using exit tickets (short feedback surveys after every class) and processing them through NotebookLM to generate follow-up materials before the next session. The feedback loop went from one semester to a few hours." www.behind-the-enemy-lines.com/2026/02/list...

behind-the-enemy-lines.comListening to My Students at Scale: Exit Tickets, NotebookLM, and the Tightest Feedback Loop I've Ever BuiltIt started at a teaching workshop, last semester: Craig Kapp and Rob Egan presented a seminar at the NYU Center for Teaching and Learning ...

Stefan Neumann reposted

TU Wien is now on the 5th place among all computer science departments at German-speaking universities in the Times Higher Education ranking. Excellent news! @informatics.tuwien.ac.at @tuwien.at

TU Wien@tuwien.at

Soeben wurde das neue Subject Ranking von @timeshighered.bsky.social veröffentlicht. Die TUW-Informatik setzt mit Platz 71 ihren Aufwärtstrend fort. Alle anderen Fächer bleiben stabil. 👉 www.tuwien.at/tu-wien/aktu... © TUW/ M. Heisler

Stefan Neumann reposted

🚀 I’m very excited to share that I’ve joined TU Wien as Assistant Professor, and that I've received a €1.8M Vienna Research Group (WWTF) grant for Multi-Player Artificial Intelligence. I’m hiring interns, PhD students & postdocs in Game Theory × ML. 🔗 Apply: forms.gle/k6xkkF4jse58...

Stefan Neumann reposted

Meinungen und Einstellungen sind selten schwarz-weiß. Ein Forschungsteam der TU Wien zeigt, dass sich Positionen in gesellschaftlichen Debatten oft überschneiden und nicht klaren Lagern zuordnen lassen. Das neue Modell analysiert dafür Interaktionen zwischen Gruppen. 💬📊 #TechnikfürMenschen

tuwien.atJenseits fester Pole: Was Netzwerke über Polarisierung verratenForschende der TU Wien entwickeln ein Modell, das Meinungen nicht als diametral entgegensetzte Pole interpretiert, sondern als überlappende Bereiche auf Gruppenebene.

Stefan Neumann reposted

Save the date: @katta.bsky.social and me are organizing the Austrian Computer Science Day #ACSD on June 1, 2026 at TU Wien with the motto CS in Modern Society: a Sign of the Times! More info and program coming soon here: informatics.tuwien.ac.at/acsd (CC) @tuwien.at & @informatics.tuwien.ac.at

informatics.tuwien.ac.atSave the Date: Austrian Computer Science Day 2026Join us on June 1, 2026, at TU Wien’s Kuppelsaal for the annual Austrian Computer Science Day!

Stefan Neumann reposted

Stefan Neumann reposted

The deadline for BARC's annual call for PhD positions is soon (January 10)!

Rasmus Pagh@rasmuspagh.net

Want to join the ambitious, creative, collaborative, and fun environment at BARC? Our annual call for PhD or integrated MSc + PhD fellowship in Algorithms has been posted! Apply by January 10. employment.ku.dk/phd/?show=15...

Stefan Neumann reposted

Reminder: we are hiring an Assistant Professor in computer science! All areas of computer science will be considered. We are in particular interested in candidates whose research is on datacenter-scale computing systems. Deadline: Monday, February 2nd, 2026. www.aalto.fi/en/open-posi...