Tiziano Piccardi
Assistant Professor @ Johns Hopkins University | Prev: Stanford & EPFL | piccardi.me
- Reposted by Tiziano PiccardiRead the article by @tiziano.bsky.social:
- Reposted by Tiziano PiccardiIs the only way we can create algorithms that people understand to make them trivially simple? We argue, no. People can predict the behavior of algorithms that are arbitrarily complex, if and only if they are available, compact and aligned. arxiv.org/abs/2601.18966
- Deadline soon!
- Reposted by Tiziano Piccardi📢 Undergrads! Can’t make tomorrow’s CS faculty research panel? Join us for our 2nd panel on Thurs, 1/15 to learn about research opps & connect w/ faculty like @ananya-a-joshi.bsky.social, @tiziano.bsky.social, @erye.bsky.social, & more out of the classroom. Learn more: www.cs.jhu.edu/event/comput...
- 📣 Postdoc opportunity at Johns Hopkins The DSAI Institute at Johns Hopkins is hiring postdocs through its fellowship program (2+ years). If you're interested in human-AI interaction, social computing, and the design of online platforms, I'd love to work with you. 🗓 Deadline: January 23, 2026
- Join us in advancing data science and AI research! The Johns Hopkins Data Science and AI Institute Postdoctoral Fellowship Program is now accepting applications for the 2026–2027 academic year. Apply now! Deadline: Jan 23, 2026. Details and apply: apply.interfolio.com/179059
- Reposted by Tiziano PiccardiCSCW folks, I wanted to highlight how excited and proud I am to see work from our community (dl.acm.org/doi/10.1145/..., CSCW '24 best paper winner led by @jiachenyan.bsky.social and @mlam.bsky.social) grow and expand ambition into this Science paper. CSCW has a ton to offer the world.
- Our new article in @science.org enables social media reranking outside of platforms' walled gardens. We add an LLM-powered reranking of highly polarizing political content into N=1256 participants' feeds. Downranking cools tensions with the opposite party—but upranking inflames them.
- Reposted by Tiziano PiccardiOur new article in @science.org enables social media reranking outside of platforms' walled gardens. We add an LLM-powered reranking of highly polarizing political content into N=1256 participants' feeds. Downranking cools tensions with the opposite party—but upranking inflames them.
- Reposted by Tiziano PiccardiNew paper in Science: In a platform-independent field experiment, we show that reranking content expressing antidemocratic attitudes and partisan animosity in social media feeds alters affective polarization. 🧵
- 🚨 I'm recruiting PhD students in Computer Science at Johns Hopkins University for Fall 2026. If you're interested in AI, HCI, and designing better online platforms and experiences, apply to work with me! More info: piccardi.me
- Reposted by Tiziano Piccardi🎓 Alumni Spotlight #7: Tiziano Piccardi @tiziano.bsky.social 💻 Assistant Professor at Johns Hopkins (@jhu.edu), exploring HCI, AI & Social Computing. PhD in Computer Science at EPFL (Data Science Lab, Robert West). Former Postdoc at Stanford and co-founder of Widerun, a VR + fitness startup.
- Reposted by Tiziano PiccardiThe Department of Computer Science is pleased to welcome nine new tenure-track faculty to its ranks this academic year! Featuring @anandbhattad.bsky.social, @uthsav.bsky.social, @gligoric.bsky.social, @murat-kocaoglu.bsky.social, @tiziano.bsky.social, and more:
- Reposted by Tiziano Piccardi10 new CS professors! 🥳 @anandbhattad.bsky.social @uthsav.bsky.social @gligoric.bsky.social @murat-kocaoglu.bsky.social @tiziano.bsky.social
- Reposted by Tiziano PiccardiSocial media feeds today are optimized for engagement, often leading to misalignment between users' intentions and technology use. In a new paper, we introduce Bonsai, a tool to create feeds based on stated preferences, rather than predicted engagement. arxiv.org/abs/2509.10776
- 5 fully funded visiting researcher positions in Oxford and Stanford! ‼️
- Reposted by Tiziano PiccardiThe EPFL NLP lab is looking to hire a postdoctoral researcher on the topic of designing, training, and evaluating multilingual LLMs: docs.google.com/document/d/1... Come join our dynamic group in beautiful Lausanne!
- Reposted by Tiziano PiccardiLast day of #ACL2025NLP but there's still lots to do: attend the #WikiNLP workshop, where we explore how NLP and wikipedia can help each other! We have amazing keynotes, discussions with Wikipedia editors, a panel + posters! Details: meta.wikimedia.org/wiki/NLP_for... Join us in room 2.31!
- Reposted by Tiziano PiccardiExcited to co-organize the Bridging Human and LLM Annotations for Social Science tutorial at #ic2s2 tomorrow! Join us at 1:30pm CEST to learn how to combine Qualtrics+Prolific, MTurk, & LLMs for automated annotation and valid estimates. Code&materials: github.com/kristinaglig...
- Reposted by Tiziano Piccardi#ICWSM @icwsm.bsky.social would be nothing without its community. Here are some of the heroes who work hard to guarantee that authors receive useful reviews: @aldayelabeer.bsky.social @chibold.bsky.social @lespin.bsky.social @elaragon.bsky.social @shrutiphadke.bsky.social @tiziano.bsky.social
- Reposted by Tiziano PiccardiLooking forward to giving a tutorial on Social Media Feed Ranking Algorithms with @tiziano.bsky.social at @icwsm.bsky.social today! Come join us at AAU, Room 2.1.083.
- I'm so excited to join the CS department at Johns Hopkins University (@jhu.edu) as an Assistant Professor! I'm looking for students interested in social computing, HCI, and AI—especially around designing better online systems in the age of LLMs. Come work with me! piccardi.me
- Reposted by Tiziano PiccardiI'm excited to announce that I’ll be joining the Computer Science department at Johns Hopkins as an Assistant Professor this Fall! I’ll be working on large language models, computational social science, and AI & society—and will be recruiting PhD students. Apply to work with me!
- 100 Years of Engineering @ Stanford!
- Deadline today! 🚨 Join us at the 2nd WikiNLP Workshop on NLP for Wikipedia, co-located with #ACL2025 in Vienna. We welcome both in-person and virtual attendees! 🗓️ Submission deadline: April 30 🔗 Details: w.wiki/CumQ
- New funding opportunity for Wikimedia-related research! Grants up to $150K available. Apply by April 16th: meta.wikimedia.org/wiki/Grants:...
- Reposted by Tiziano Piccardi2⃣ seminars coming up on Thursday with @tiziano.bsky.social and @uthsav.bsky.social! Check them out at bit.ly/3Fv5n7C and bit.ly/3FssGPr
- Reposted by Tiziano PiccardiBook announcement: with Melissa Valentine, we are publishing "Flash Teams: Leading the Future of AI-Enhanced, On-Demand Work." It's a leadership book synthesizing a decade of Stanford research on how computing, online platforms, and AI reshape teamwork. Coming October from @mitpress.bsky.social!
- Thanks to @tilmanbayer.bsky.social for covering our work on Wikipedia readership in the latest Wikimedia Research newsletter! ➡️ arxiv.org/abs/2501.00939
- In the new issue of our monthly newsletter: ▸ What's known about how readers navigate Wikipedia ▸ Italian Wikipedia is the hardest to read ▸ "open access articles are extensively and increasingly more cited in Wikipedia" than those behind a paywall meta.wikimedia.org/wiki/Researc...
- Reposted by Tiziano Piccardi🤖🍲 What can LLMs do for sustainable food? 🤖🍲 We collaborated with domain experts (food scientists and chefs) to define a typology of food design and prediction tasks. LLMs can assist in food and menu development, saving food scientists' time and reducing emissions! URL: bit.ly/3ERJbUV
- Reposted by Tiziano PiccardiThe call for papers for the second edition of the #WikiNLP workshop at @aclmeeting.bsky.social is out! We welcome contributions on #NLProc + Wikimedia, especially on datasets, and ideas to advance its mission. More details: meta.wikimedia.org/wiki/NLP_for...
- Reposted by Tiziano Piccardi📢 Call for #ICWSM2025 workshop proposals! icwsm.org/2025/submit/... All Web + social media topics are welcome! Especially emerging approaches and task areas, bridging gaps between the social sciences and computing, and elucidating results of exploratory research. Due Fri Jan 24th AoE!
- How do people *really* read Wikipedia? 📖 👀 We explored how readers navigate, fall into rabbit holes, and engage with information in a chapter for the ‘Handbook of Computational Social Science,’ edited by @tahayasseri.bsky.social. Stay tuned for the full book! 📚 Preprint: arxiv.org/abs/2501.00939
- Reposted by Tiziano PiccardiThrilled to share that the Handbook of Computational Social Science manuscript was finally submitted to the publisher in full! Huge thanks to all the authors and reviewers who made this possible. Check out the Table of Contents!
- Weekend exercise: testing the Bluesky firehose. Who doesn't need a real-time dashboard to track EVERY emoji in messages? 😭, 😂, 🤣, ❤️ are topping the leaderboard! feeds.feedwizard.org (counters just started)
- Reposted by Tiziano PiccardiNew @acm-cscw.bsky.social paper, new content moderation paradigm. Post Guidance lets moderators prevent rule-breaking by triggering interventions as users write posts! We implemented PG on Reddit and tested it in a massive field experiment (n=97k). It became a feature! arxiv.org/abs/2411.16814
- New paper: Do social media algorithms shape affective polarization? We ran a field experiment on X/Twitter (N=1,256) using LLMs to rerank content in real-time, adjusting exposure to polarizing posts. Result: Algorithmic ranking impacts feelings toward the political outgroup! 🧵⬇️
- Why does this matter? Social media algorithms don’t just show you content you might like—they shape how you feel about people who think differently. Can changing what these algorithms prioritize reduce political hostility?
- We focused on posts expressing Partisan Animosity and Antidemocratic Attitudes (AAPA) as polarizing. These are defined by 8 bipartisan factors identified in the Strengthening Democracy Challenge (www.science.org/doi/10.1126/...)
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View full threadAlso, I’m on the job market! If you’d like a presentation or discussion about this work, I’d be excited to share more. Let’s connect! 👀
- Reposted by Tiziano PiccardiI made a starter pack with as many of the Twitter folk I follow that I could find: go.bsky.app/9u9wdBcat://did:plc:ldc2wu7h57ks63hpjmosislw/app.bsky.graph.starterpack/3law43kvlgr2n
- Reposted by Tiziano PiccardiHere are a few interesting starter packs with users to follow 🦋 AI: go.bsky.app/SipA7it RL: go.bsky.app/3WPHcHg NLP: go.bsky.app/SngwGeS NetSci: go.bsky.app/KMfiTU2 CSS: go.bsky.app/CYmRvcK PIT: go.bsky.app/He8HTaC You can find/create any starter pack you want! blueskydirectory.com/starter-pack...
- Reposted by Tiziano PiccardiI am recruiting 1-2 PhD students for Fall 2025 at Princeton to work on Comp Social Science/Societal Impact of GenAI/GenAI for SocSci I wrote a bit on research flavor & interests here: manoelhortaribeiro.github.io/advising Deadline: December 15th www.cs.princeton.edu/grad#prospec... Please boost!
- Reposted by Tiziano PiccardiHere is a @github.com repo where I will share tutorial notebooks on how to retrieve and analyze data from @bsky.app @atproto.com Feedback, suggestions, and contributions are welcome! github.com/brianckeegan...
- Academic job market post! 👀 I’m a CS Postdoc at Stanford in the Stanford HCI group. I develop ways to improve the online information ecosystem by designing better social media feeds & improving Wikipedia. I work on AI, Social Computing, and HCI. piccardi.me 🧵
- I develop tools (e.g., web extensions, AI models) and design large-scale field experiments to investigate how social media’s algorithmic curation shapes our online experiences, such as well-being and political polarization. Check out this paper! arxiv.org/abs/2406.19571
- In a recent large-scale field experiment using this tool on X, I explored how reranking feeds in real time with an LLM—demoting (bi)partisan content that supports antidemocratic attitudes—affects participants. Paper coming soon!
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View full threadI take the opportunity to say that I’ve been lucky to have awesome collaborators and friends from whom I’ve learned so much! @mbernst.bsky.social l @msaveski.bsky.social i.bsky.social @gligoric.bsky.social ky.social (and many more not on BlueSky yet!)
