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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.

113 Posts418 Follower233 Folgt
Adam Kucharski@adamjkucharski.bsky.social · 2w ago

“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.

Stefan Neumann@neumannstefan.com · last mo.

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.

A screenshot from the interview with the following text. Question: Several of you contrasted blog posts with papers. What can a blog do that a paper usually cannot? Ittai: A paper is written under very specific incentives. In practice, the incentive is often to get accepted by three reviewers. That is not the same as teaching the reader what is important. A paper is not always written to explain what really happened or what the reader should remember. A blog post has a different goal: it can simply try to improve understanding. It can say, “here is the idea, here is why it matters, here is how it relates to other ideas.” A blog can also be updated. If you later find a better proof, a better explanation, or a useful external resource, you can edit the post and add links. That is much harder with a paper, and even a book update is a big event. A blog post can remain useful for years precisely because it can be improved. Alin: Blogs are good at collecting scattered knowledge. For a primitive such as ECDSA, there may be many papers, but not one place that explains the scheme, public-key recovery, batch verification, malleability, why Bitcoin used it, why Ethereum used it, and what the practical tradeoffs are. A blog can be a focused survey of one idea or one primitive. It does not have to claim novelty; it can focus on clarity. Kartik: That is important because academic writing often does the opposite. To get a paper accepted, you emphasize the difference from previous work. But when you want to understand an area, it is equally important to know when two things are really the same idea in different languages. A blog post can make those similarities explicit.
European Association for Theoretical Computer Science@eatcs.bsky.social · last mo.

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

POV: you are reading on your ereader, sitting under the shade of a tree on a striped picnic blanket whose colors bear a suspicious similarity to the lesbian flag. There is a warm breeze that makes it comfortable to be outside, and because you have an ereader the wind doesn't perturb your pages. You are reading the 2026 Summer issue of the EATCS Bulletin and life is good Picture i found on pixabay with the search term 'summer reading'. Thank you Perfecto_Capucine
Stefan Neumann@neumannstefan.com · 2mo ago

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 · 2mo ago

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

Photo of me in front of Stephansdom looking like a big dork
Timothy Gowers@wtgowers.bsky.social · 3mo ago

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.

Stefan Neumann@neumannstefan.com · 5mo ago

It was my pleasure speaking with @nutanlimaye.bsky.social about her podcast "Life of a Researcher". Check out the interview in the post below and listen to her great podcast. podcastaddict.com/podcast/life-of-a-researcher/4111736

Life of a researcher

Listen to Life of a researcher by Nutan Limaye on Podcast Addict. Welcome to Life of a researcher! Here we meet academic researchers and share their stories. We chat about what got them where they are and about what keeps them going. The hope is that these conversations will make the field of research accessible to young people. It will show how we can have very very different starting points and yet land up forming a career as a researcher.

podcastaddict.com

European Association for Theoretical Computer Science@eatcs.bsky.social · 5mo ago

In the TCS on the Web Column, complexity theorist Nutan Limaye tells us about her Life of a Researcher podcast #CSTheory bulletin.eatcs.org/index.php/be...

Johan Ugander@jugander.bsky.social · 6mo ago

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...

Listening to My Students at Scale: Exit Tickets, NotebookLM, and the Tightest Feedback Loop I've Ever Built

It started at a teaching workshop, last semester: Craig Kapp and Rob Egan presented a seminar at the NYU Center for Teaching and Learning ...

behind-the-enemy-lines.com

Rasmus Pagh@rasmuspagh.net · 6mo ago

My awesome BARC colleague @nutanlimaye.bsky.social is starting a major research project in algebraic complexity. Anyone interested in joining as a PhD student should check out the call (deadline March 1). barc.ku.dk/news/profess...

Professor Nutan Limaye receives DKK 12.8 million for research on algebraic complexity

The project explores fundamental limits of efficient computation, linking algebraic methods with randomness and parallelism to advance complexity theory.

barc.ku.dk

Stefan Neumann@neumannstefan.com · 6mo ago

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 · 6mo ago

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

Drohnenbild der TUW mit einem weiĂźen, etwas transparenten Balken darĂĽber mit Logo und Schriftzug von Times Higher Education University Rankings 2026
Tatjana Chavdarova@tatjanac.bsky.social · 7mo ago

🚀 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...

BildBild
TU Wien@tuwien.at · 7mo ago

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

Jenseits fester Pole: Was Netzwerke ĂĽber Polarisierung verraten

Forschende der TU Wien entwickeln ein Modell, das Meinungen nicht als diametral entgegensetzte Pole interpretiert, sondern als ĂĽberlappende Bereiche auf Gruppenebene.

tuwien.at

Martina Lindorfer@lindorfer.in · 7mo ago

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

Save the Date: Austrian Computer Science Day 2026

Join us on June 1, 2026, at TU Wien’s Kuppelsaal for the annual Austrian Computer Science Day!

informatics.tuwien.ac.at

Jukka Suomela@jukkasuomela.fi · 7mo ago

Aalto University is hiring summer interns! 1: Aalto Science Institute International Summer Research Program: www.aalto.fi/en/aalto-sci...

Aalto Science Institute International Summer Research Programme | Aalto University

Calling all research-oriented students: Spend Summer 2026 in Finland with a transformative research assistantship at Aalto University. Open to bachelor's, master's, and—in exceptional cases—doctoral students worldwide.

aalto.fi

Jukka Suomela@jukkasuomela.fi · 8mo ago

We are hiring an Assistant Professor in computer science! This is a broad call, all areas of computer science will be considered! We are in particular interested in datacenter-scale computing systems. www.aalto.fi/en/open-posi...

Assistant Professor in Computer Science | Aalto University

Candidates applying to this call are considered for Assistant Professor position only. Applicants are required to have a doctoral degree and a publication track record in top journals and conferences in a relevant field.

aalto.fi

Nicole Wein@nicolewein.bsky.social · 8mo ago

The directed next-to-shortest path problem was solved by 2 undergrads! arxiv.org/abs/2511.04345 Look out for Kuowen Chen and Yiran Zhang this PhD application cycle.

A Polynomial-Time Algorithm for the Next-to-Shortest Path Problem on Positively Weighted Directed Graphs

Given a graph and a pair of terminals $s$, $t$, the next-to-shortest path problem asks for an $s\!\to \!t$ (simple) path that is shortest among all not shortest $s\!\to \!t$ paths (if one exists). Thi...

arxiv.org