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.
Previously: KTH, Brown, Uni Wien.
I study algorithms for data science and social-network analysis. Connecting theory 🤝 practice.
More info: https://neumannstefan.com.
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
@informatics.tuwien.ac.at @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
👉 www.tuwien.at/tu-wien/aktu...
© TUW/ M. Heisler
January 23, 2026 at 8:17 AM
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
@informatics.tuwien.ac.at @tuwien.at
Reposted by Stefan Neumann
🚀 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...
🔗 Apply: forms.gle/k6xkkF4jse58...
January 19, 2026 at 6:14 PM
🚀 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...
🔗 Apply: forms.gle/k6xkkF4jse58...
Reposted by Stefan Neumann
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
#TechnikfürMenschen
Jenseits fester Pole: Was Netzwerke über Polarisierung verraten
Forschende der TU Wien entwickeln ein Modell, das Meinungen nicht als diametral entgegensetzte Pole interpretiert, sondern als überlappende Bereiche auf Gruppenebene.
www.tuwien.at
January 15, 2026 at 7:22 AM
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
#TechnikfürMenschen
Reposted by Stefan Neumann
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
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
January 9, 2026 at 12:54 PM
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
More info and program coming soon here:
informatics.tuwien.ac.at/acsd
(CC) @tuwien.at & @informatics.tuwien.ac.at
Reposted by Stefan Neumann
Consider signing this petition regarding restoring free access to the ACM digital library: www.ipetitions.com/petition/res...
Petition Restore Fully Free and Open Access to the ACM Digital Library
Restore Fully Free and Open Access to the ACM Digital Library
www.ipetitions.com
January 9, 2026 at 8:08 AM
Consider signing this petition regarding restoring free access to the ACM digital library: www.ipetitions.com/petition/res...
Reposted by Stefan Neumann
2: Summer employee positions at the Department of Computer Science: www.aalto.fi/en/departmen...
Summer employee positions at the Department of Computer Science 2026 | Aalto University
We are looking for BSc or MSc degree students at Aalto or other universities to work with us during the summer 2026
www.aalto.fi
January 7, 2026 at 9:16 PM
2: Summer employee positions at the Department of Computer Science: www.aalto.fi/en/departmen...
Reposted by Stefan Neumann
Aalto University is hiring summer interns!
1: Aalto Science Institute International Summer Research Program: www.aalto.fi/en/aalto-sci...
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.
www.aalto.fi
January 7, 2026 at 9:16 PM
Aalto University is hiring summer interns!
1: Aalto Science Institute International Summer Research Program: www.aalto.fi/en/aalto-sci...
1: Aalto Science Institute International Summer Research Program: www.aalto.fi/en/aalto-sci...
Reposted by Stefan Neumann
The deadline for BARC's annual call for PhD positions is soon (January 10)!
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...
BARC – University of Copenhagen
barc.ku.dk
January 5, 2026 at 8:50 AM
The deadline for BARC's annual call for PhD positions is soon (January 10)!
Reposted by Stefan Neumann
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...
December 29, 2025 at 12:34 PM
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...
I enjoyed reading this. I agree that throughout the last 10 years or so, CS has become a lot more empirical.
This also means that there is a lot of work for theoretical computer scientists out there.
This also means that there is a lot of work for theoretical computer scientists out there.
December 17, 2025 at 3:04 PM
I enjoyed reading this. I agree that throughout the last 10 years or so, CS has become a lot more empirical.
This also means that there is a lot of work for theoretical computer scientists out there.
This also means that there is a lot of work for theoretical computer scientists out there.
Reposted by Stefan Neumann
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...
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.
www.aalto.fi
December 17, 2025 at 1:43 PM
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...
www.aalto.fi/en/open-posi...
Reposted by Stefan Neumann
I just gave a tutorial on Design Templates for Dynamic Graph Algorithms at IISc in Bangalore.
The kindest words I received were "best tutorial I have listened to in the last 10 years." Hope it interests you.
Video: www.youtube.com/live/L8ev24g...
Slides: tinyurl.com/yetx3vxu
The kindest words I received were "best tutorial I have listened to in the last 10 years." Hope it interests you.
Video: www.youtube.com/live/L8ev24g...
Slides: tinyurl.com/yetx3vxu
Frontiers of Graph Algorithms | Day 1 | 8th Dec 2025
YouTube video by CSAChannel IISc
www.youtube.com
December 9, 2025 at 9:00 PM
I just gave a tutorial on Design Templates for Dynamic Graph Algorithms at IISc in Bangalore.
The kindest words I received were "best tutorial I have listened to in the last 10 years." Hope it interests you.
Video: www.youtube.com/live/L8ev24g...
Slides: tinyurl.com/yetx3vxu
The kindest words I received were "best tutorial I have listened to in the last 10 years." Hope it interests you.
Video: www.youtube.com/live/L8ev24g...
Slides: tinyurl.com/yetx3vxu
Reposted by Stefan Neumann
smoothed analysis is dead. i gave a eulogy
Optimal Smoothed Analysis of the Simplex Method
YouTube video by FOCS 2025
youtu.be
December 9, 2025 at 9:19 AM
smoothed analysis is dead. i gave a eulogy
Reposted by Stefan Neumann
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
December 4, 2025 at 5:36 PM
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.
Reposted by Stefan Neumann
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...
BARC – University of Copenhagen
barc.ku.dk
November 26, 2025 at 8:26 AM
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...
TU Wien Informatics is hiring for a Full Professor of Parallel Computing.
Come and join our faculty! We are among the Top 13 CS departments in Europe according to CSRankings and it's a lot of fun to work here.
Find more information here: informatics.tuwien.ac.at/news/3050
Come and join our faculty! We are among the Top 13 CS departments in Europe according to CSRankings and it's a lot of fun to work here.
Find more information here: informatics.tuwien.ac.at/news/3050
Full Professor of Parallel Computing
We invite applications for this full-time professorship until January 22, 2026.
informatics.tuwien.ac.at
November 14, 2025 at 1:18 PM
TU Wien Informatics is hiring for a Full Professor of Parallel Computing.
Come and join our faculty! We are among the Top 13 CS departments in Europe according to CSRankings and it's a lot of fun to work here.
Find more information here: informatics.tuwien.ac.at/news/3050
Come and join our faculty! We are among the Top 13 CS departments in Europe according to CSRankings and it's a lot of fun to work here.
Find more information here: informatics.tuwien.ac.at/news/3050
Reposted by Stefan Neumann
Save-the-Date: AI Festival an der TU Wien
Die TU Wien Informatics lädt zum AI Festival, einem dreitägigen Event zum Thema KI
1.-3. Dezember 2025
TU Wien, Campus Gußhaus
Kontaktraum
Mehr Info und Anmeldung ⬇️
Die TU Wien Informatics lädt zum AI Festival, einem dreitägigen Event zum Thema KI
1.-3. Dezember 2025
TU Wien, Campus Gußhaus
Kontaktraum
Mehr Info und Anmeldung ⬇️
Save-the-Date: AI Festival at TU Wien
Join us from December 1-3 at TU Wien for a three-day festival revolving around Artificial Intelligence!
informatics.tuwien.ac.at
November 12, 2025 at 7:33 AM
Save-the-Date: AI Festival an der TU Wien
Die TU Wien Informatics lädt zum AI Festival, einem dreitägigen Event zum Thema KI
1.-3. Dezember 2025
TU Wien, Campus Gußhaus
Kontaktraum
Mehr Info und Anmeldung ⬇️
Die TU Wien Informatics lädt zum AI Festival, einem dreitägigen Event zum Thema KI
1.-3. Dezember 2025
TU Wien, Campus Gußhaus
Kontaktraum
Mehr Info und Anmeldung ⬇️
We uploaded a new version with links to Omer Reingold's "Research Life Stories", to Luca Trevisan's series of posts about gay and lesbian computer scientists, and so on.
Check out the updated version: eatcs.org/images/bulle...
The links are also in the comment below.
Happy reading!
Check out the updated version: eatcs.org/images/bulle...
The links are also in the comment below.
Happy reading!
November 10, 2025 at 8:20 AM
We uploaded a new version with links to Omer Reingold's "Research Life Stories", to Luca Trevisan's series of posts about gay and lesbian computer scientists, and so on.
Check out the updated version: eatcs.org/images/bulle...
The links are also in the comment below.
Happy reading!
Check out the updated version: eatcs.org/images/bulle...
The links are also in the comment below.
Happy reading!
Reposted by Stefan Neumann
We have a call for contributions. Check out the text post on the channel for details.
Alongside the new bulletin, is the first video on the new EATCS Youtube channel!
We learn about different ways to record your seminar talks.
We learn about different ways to record your seminar talks.
October 31, 2025 at 12:13 PM
We have a call for contributions. Check out the text post on the channel for details.
Reposted by Stefan Neumann
Alongside the new bulletin, is the first video on the new EATCS Youtube channel!
We learn about different ways to record your seminar talks.
We learn about different ways to record your seminar talks.
October 30, 2025 at 8:12 PM
Alongside the new bulletin, is the first video on the new EATCS Youtube channel!
We learn about different ways to record your seminar talks.
We learn about different ways to record your seminar talks.
The new EATCS Bulletin #147 is available!
eatcs.org/images/bulle...
In the TCS on the Web Column, I talked to the maintainers of the TCS Blog Aggregator: Nima Anari, Arnab Bhattacharyya and
Gautam Kamath.
It was a very fun interview!
@gautamkamath.com @schmiste-ch.bsky.social
eatcs.org/images/bulle...
In the TCS on the Web Column, I talked to the maintainers of the TCS Blog Aggregator: Nima Anari, Arnab Bhattacharyya and
Gautam Kamath.
It was a very fun interview!
@gautamkamath.com @schmiste-ch.bsky.social
October 30, 2025 at 12:44 PM
The new EATCS Bulletin #147 is available!
eatcs.org/images/bulle...
In the TCS on the Web Column, I talked to the maintainers of the TCS Blog Aggregator: Nima Anari, Arnab Bhattacharyya and
Gautam Kamath.
It was a very fun interview!
@gautamkamath.com @schmiste-ch.bsky.social
eatcs.org/images/bulle...
In the TCS on the Web Column, I talked to the maintainers of the TCS Blog Aggregator: Nima Anari, Arnab Bhattacharyya and
Gautam Kamath.
It was a very fun interview!
@gautamkamath.com @schmiste-ch.bsky.social
Reposted by Stefan Neumann
My lab is looking for a Senior Scientist (= PostDoc with option of permanency)!
We are looking for someone interested in doing cutting-edge computational social science + helping us with data & software engineering 🤓.
See job ad for details jobs.uni-graz.at/en/jobs/7d14...
We are looking for someone interested in doing cutting-edge computational social science + helping us with data & software engineering 🤓.
See job ad for details jobs.uni-graz.at/en/jobs/7d14...
Universität Graz
jobs.uni-graz.at
October 28, 2025 at 7:02 AM
My lab is looking for a Senior Scientist (= PostDoc with option of permanency)!
We are looking for someone interested in doing cutting-edge computational social science + helping us with data & software engineering 🤓.
See job ad for details jobs.uni-graz.at/en/jobs/7d14...
We are looking for someone interested in doing cutting-edge computational social science + helping us with data & software engineering 🤓.
See job ad for details jobs.uni-graz.at/en/jobs/7d14...
Reposted by Stefan Neumann
The simplex algorithm is super efficient. 80 years of experience says it runs in linear time. Nobody can explain _why_ it is so fast.
We invented a new algorithm analysis framework to find out.
We invented a new algorithm analysis framework to find out.
Beyond Smoothed Analysis: Analyzing the Simplex Method by the Book
Narrowing the gap between theory and practice is a longstanding goal of the algorithm analysis community. To further progress our understanding of how algorithms work in practice, we propose a new alg...
arxiv.org
October 27, 2025 at 1:43 AM
The simplex algorithm is super efficient. 80 years of experience says it runs in linear time. Nobody can explain _why_ it is so fast.
We invented a new algorithm analysis framework to find out.
We invented a new algorithm analysis framework to find out.
Reposted by Stefan Neumann
The debate over “LLMs as annotators” feels familiar: excitement, backlash, and anxiety about bad science. My take in a new blogpost is that LLMs don’t break measurement; they expose how fragile it already was.
doomscrollingbabel.manoel.xyz/p/labeling-d...
doomscrollingbabel.manoel.xyz/p/labeling-d...
Labeling Data with Language Models: Trick or Treat?
Large language models are now labeling data for us.
doomscrollingbabel.manoel.xyz
October 25, 2025 at 6:29 PM
The debate over “LLMs as annotators” feels familiar: excitement, backlash, and anxiety about bad science. My take in a new blogpost is that LLMs don’t break measurement; they expose how fragile it already was.
doomscrollingbabel.manoel.xyz/p/labeling-d...
doomscrollingbabel.manoel.xyz/p/labeling-d...
STOC'26 will provide an *optional* pre-submission feedback based on Gemini. The model is optimized for checking mathematical rigor.
Looks interesting. They also post example outputs and comments on them.
Announcement: acm-stoc.org/stoc2026/sto...
Example reviews: www.cs.cmu.edu/~dwoodruf/st...
Looks interesting. They also post example outputs and comments on them.
Announcement: acm-stoc.org/stoc2026/sto...
Example reviews: www.cs.cmu.edu/~dwoodruf/st...
October 25, 2025 at 2:20 PM
STOC'26 will provide an *optional* pre-submission feedback based on Gemini. The model is optimized for checking mathematical rigor.
Looks interesting. They also post example outputs and comments on them.
Announcement: acm-stoc.org/stoc2026/sto...
Example reviews: www.cs.cmu.edu/~dwoodruf/st...
Looks interesting. They also post example outputs and comments on them.
Announcement: acm-stoc.org/stoc2026/sto...
Example reviews: www.cs.cmu.edu/~dwoodruf/st...