Jürgen Pfeffer 💎 @jurgenpfeffer.bsky.social
@JurgenPfeffer
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Prof of Computational Social Science. SOT/@TU_Muenchen @HfPMuenchen. Adjunct Prof @CarnegieMellon. Social Network Analysis, Critical Data Studies, #CSS @ICWSM
Munich, Germany
Joined February 2014
Welcome to another week of international meeting coordination drama! Europe has concluded "Summer Time", while the US will stay another week in Day Light Saving time.
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Ready for #ICWSM2026 in LA next May? 🌴 📅 Deadlines: • Jan 15, 2026 – Papers, posters, demos, datasets, tutorials (note: posters/demos/datasets submitted in Sep '25 are reviewed only after this deadline) • Jan 30, 2026 – Workshop proposals 🔗 Details: https://t.co/KTnOPzuutb
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Please help ❤️💚🤎💙🧡💜💛🩵
We’ve received A LOT OF submissions this year 🤯🤯 and are excited to see so much interest! To ensure high-quality review, we are looking for more dedicated reviewers. If you'd like to help, please sign up here
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curious about the training data of OpenAI's new gpt-oss models? i was too. so i generated 10M examples from gpt-oss-20b, ran some analysis, and the results were... pretty bizarre time for a deep dive 🧵
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🚨 The deadline for submitting proposals to host ICWSM 2027 is extended! Send your proposals (and questions) to Ceren Budak by August 15
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Ever wanted to pan through the latent🌌 space of TikTok videos? Made using the amazing toponymy and datamapplot from @leland_mcinnes and data from mine and @jurgenpfeffer's first complete TikTok slice. link below
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So honored to receive this recognition. Can't thank enough those who supported me along the way. Feels like a dream to receive an award named after two legends, @ladamic @nglance. #ICWSM is very special to my heart, sad to have missed it this year. Thank you, @icwsm community❤️
🏆 The Adamic-Glance winner of this year is @kous2v.bsky.social, for foundational work in using social media and multimodal sensing data #icwsm
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It’s happening. BRAN Lab is here, my first research group. We explore how and why we connect (and disconnect), using network science, signed networks, ML, and cognitive modeling: from minds to systems, humans to AI, mental health to epidemic prevention. https://t.co/niUXIxKoLq
andreiasofiateixeira.com
Bridging Minds, Behavior, and Society through Network Science
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Super surprised and honored to receive the single Best Paper award 🏆 at #ICWSM this year (out of 138 papers) for my work with Leon Leibmann, @amyxzh, and @timalthoff on Reddit Rules! 🎊
If you're at #ICWSM be sure to swing by the spotlight session after lunch to check our our work on Reddit rules with @amyxzh, @timalthoff and Leon Leibmann! Leon is presenting an analysis of 68k rules across 5 yrs, connecting them to important community outcomes. 🧵
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Good morning #ICWSM ☀️ Ready to kick off the workshop and tutorial day in building A! 📍 Find your badge at the registration desk and your room in the schedule https://t.co/6wiNtLnmyt
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Honored to receive the 🏆Best Paper Award at @WebSciConf with @Sodiovalproato & @BeiroMariano for our study on the role of moral values in user engagement with news on Twitter https://t.co/4HWw9CgfeN
@ISI_Fondazione @UPFBarcelona @UdeSA @Conicet
#NLP #SocialMedia #News
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Deutschlandfunk radio covering our work TikTok (in German): https://t.co/4fZhP6OFAV
deutschlandfunk.de
TikTok gehört zu den größten Plattformen der Welt. Doch wie das Portal funktioniert, ist nur wenig bekannt. Forscher wollen mehr Licht ins Dunkel bringen.
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How we "guessed" the Pope using network science: inside the cardinal network. A study by me, Beppe Soda and Alessandro Iorio. Article: https://t.co/xQ0fTmpVxb
@Unibocconi
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Researchers reckon they've managed to reverse-engineer access to a single day on TikTok. Among the findings? One in five videos features kids, and uploads at zero seconds past the minute do better. By me for @FastCompany
fastcompany.com
Researchers tracked nearly every post uploaded in a single day. They uncovered some surprising patterns.
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And here a photo from the data collection setup. :)
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We find evidence of bot activity (e.g. users posting hundreds or event thousands of videos per hour). TikTok's counter strategy seems to be shadow-banning (average of 1.9 views for these videos). Preprint:
arxiv.org
TikTok is now a massive platform, and has a deep impact on global events. Despite preliminary studies, issues remain in determining fundamental characteristics of the platform. We develop a method...
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Posts per capita show TikTok bans and very active countries.
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Some results: - We estimate 117M videos on our collection day - ~1,500 videos per second, ~86,000 per minute - Two-peak per hour distribution deviates from Twitter/X - Almost 20% of videos contain children
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Have you ever asked yourself about the overall extent of TikTok? Here some numbers from "Just Another Hour on TikTok" - Great compliment to @bendavidsteel for this data collection effort! w/ @MiriamSchirmer & @derekruths
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