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Tiziano Piccardi

@tiziano.bsky.social
1.9K followers 453 following 41 posts

Assistant Professor @ Johns Hopkins University | Prev: Stanford & EPFL | piccardi.me

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Reposted by Tiziano Piccardi
JHU Computer Science @jhucompsci.bsky.social · 09/09/2026
Get to know Assistant Professor @tiziano.bsky.social in our New Faculty Q&A:
cs.jhu.edu
New faculty Q&A: Tiziano Piccardi
Get to know Tiziano Piccardi, who joins Johns Hopkins as an assistant professor of computer science and a member of the Data Science and AI Institute.
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Ziv Epstein @ziv-e.bsky.social · 19/08/2026
Do our social media algorithms correctly reflect our values? Our new article published today in @pnas.org shows that the answer is often not, and that the content that gets promoted into their ranked feeds is often actively counter to our values.
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Tiziano Piccardi @tiziano.bsky.social · 29/07/2026
Excited about this, and even more excited to work with such an amazing team!
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Martin Saveski @msaveski.bsky.social · 27/07/2026
Looking forward to giving a tutorial on 𝗦𝗼𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮 𝗙𝗲𝗲𝗱 𝗥𝗮𝗻𝗸𝗶𝗻𝗴 𝗔𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺𝘀 with @tiziano.bsky.social at @ic2s2.bsky.social! 🕜 𝗧𝗶𝗺𝗲: Tuesday, 1-4 pm 📍 𝗟𝗼𝗰𝗮𝘁𝗶𝗼𝗻: Mansfield (210). 🌐 𝗪𝗲𝗯𝘀𝗶𝘁𝗲: social-media-ais.github.io/ic2s2-26-tut...
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JHU Computer Science @jhucompsci.bsky.social · 05/06/2026
Last month’s Human-Centered AI Workshop organized by Chien-Ming Huang, @tiziano.bsky.social, @ziangxiao.bsky.social, & @yaxingyao.bsky.social was a success—featuring a keynote from @utaustin.bsky.social’s Min Kyung Lee, several spotlight presentations, & working groups to spark new collaborations. ✨
Min Kyung Lee presents from behind a Johns Hopkins branded lectern.A group of researchers discusses in a circle in the 6225 Smith Ave. Building on the Mt. Washington campus.Researchers sit in chairs in a circle in front of a poster and windows. One researcher waves to the camera.Jason Eisner leans over a laptop and presents in front of a TV screen.
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Ugur Kursuncu @ugurkursuncu.bsky.social · 21/05/2026
Excited to share this year's program for #CySoc2026 @icwsm.bsky.social in Los Angeles. This year’s workshop focuses on human–AI relationships, online toxicity, platform dynamics, and broader societal risks emerging around generative and agentic AI. 🧵1/2
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Jonathan Stray @jonathanstray.com · 27/03/2026
Could social media make us less polarized instead of more? We tested 5 algorithms on 3 platforms with 10,000 people for 6 months during the 2024 election, and found that the answer is yes. 🧵
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Ziv Epstein @ziv-e.bsky.social · 25/03/2026
Pleased to share our new paper forthcoming in @icwsm.bsky.social! We introduce a novel framework to measure value expressions in social media posts at scale, leveraging personalization to handle the inherent subjectivity of human values. arxiv.org/abs/2511.08453
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Tiziano Piccardi @tiziano.bsky.social · 24/03/2026
Excited to join a panel discussion on our recent work about social media and polarization!
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Tiziano Piccardi @tiziano.bsky.social · 05/03/2026
Excited to share our new paper in ACM Transactions on Social Computing! link.growkudos.com/1eqlle3swsg
link.growkudos.com
How to run independent experiments that change social media feeds
Social media feeds strongly influence what people see, read, and believe, yet it is increasingly difficult for independent researchers to study how these ranking systems shape public opinion. This pap...
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JHU Computer Science @jhucompsci.bsky.social · 04/02/2026
Read the article by @tiziano.bsky.social:
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Lindsay Popowski @popowski.bsky.social · 29/01/2026
Is 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
A search for factors for algorithm understanding results in multiple terms displayed as documents, including available, compact, and aligned. These are shown to be necessary and sufficient. Other, similar terms are shown in the background faded, like intuitive, rule-based, grounded, modular, linear, decomposable, accurate, symbolic, causal, and personalized.
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Tiziano Piccardi @tiziano.bsky.social · 12/01/2026
Deadline soon!
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JHU Computer Science @jhucompsci.bsky.social · 07/01/2026
📢 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...
CS Faculty Research Panel: Ananya Joshi, Tiziano Piccardi, Erik Rye, Lydia Zakynthinou.
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Tiziano Piccardi @tiziano.bsky.social · 22/12/2025
📣 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
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Michael Bernstein @mbernst.bsky.social · 03/12/2025
CSCW 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.
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Michael Bernstein @mbernst.bsky.social · 01/12/2025
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.
screenshot of the title and authors of the Science paper that are linked in the next post
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Martin Saveski @msaveski.bsky.social · 01/12/2025
New 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. 🧵
Today, social media platforms hold the sole power to study the effects of feed-ranking algorithms. We developed a platform-independent method that reranks participants’ feeds in real time and used this method to conduct a preregistered 10-day field experiment with 1256 participants on X during the 2024 US presidential campaign. Our experiment used a large language model to rerank posts that expressed antidemocratic attitudes and partisan animosity (AAPA). Decreasing or increasing AAPA exposure shifted out-party partisan animosity by more than 2 points on a 100-point feeling thermometer, with no detectable differences across party lines, providing causal evidence that exposure to AAPA content alters affective polarization. This work establishes a method to study feed algorithms without requiring platform cooperation, enabling independent evaluation of ranking interventions in naturalistic settings.
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Tiziano Piccardi @tiziano.bsky.social · 13/11/2025
🚨 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
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EPFL School of Computer and Communication Sciences @icepfl.bsky.social · 31/10/2025
🎓 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.
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JHU Computer Science @jhucompsci.bsky.social · 29/10/2025
The 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:
cs.jhu.edu
Nine new tenure-track faculty join Johns Hopkins Computer Science
Their research spans social computing and human-computer interaction to the theoretical foundations and real-world applications of machine learning models.
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JHU Computer Science @jhucompsci.bsky.social · 08/10/2025
10 new CS professors! 🥳 @anandbhattad.bsky.social @uthsav.bsky.social @gligoric.bsky.social @murat-kocaoglu.bsky.social @tiziano.bsky.social
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 16/09/2025
Social 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
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Tiziano Piccardi @tiziano.bsky.social · 08/09/2025
5 fully funded visiting researcher positions in Oxford and Stanford! ‼️
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Antoine Bosselut @abosselut.bsky.social · 04/08/2025
The 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!
docs.google.com
EPFL NLP Postdoctoral Scholar Posting - Swiss AI LLMs
The EPFL Natural Language Processing (NLP) lab is looking to hire a postdoctoral researcher candidate in the area of multilingual LLM design, training, and evaluation. This postdoctoral position is as...
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Indira Sen @indiiigo.bsky.social · 01/08/2025
Last 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!
WikiNLP workshop program with keynotes, dataset panel, poster session, discussions with Wikipedia editors and more.
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Kristina Gligoric @IC2S2 @gligoric.bsky.social · 21/07/2025
Excited 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...
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Ingmar Weber @ingmarweber.de · 26/06/2025
#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
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Martin Saveski @msaveski.bsky.social · 23/06/2025
Looking 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.
Title slide for an ICWSM tutorial titled "Social Media Feed Ranking Algorithms: Guide to Field Experiments" by Tiziano Piccardi and Martin Saveski, featuring stylized social media posts and an alert icon highlighting emotionally engaging content.
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Tiziano Piccardi @tiziano.bsky.social · 02/06/2025
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
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Kristina Gligoric @IC2S2 @gligoric.bsky.social · 30/05/2025
I'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!
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Tiziano Piccardi @tiziano.bsky.social · 16/05/2025
100 Years of Engineering @ Stanford!
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Tiziano Piccardi @tiziano.bsky.social · 30/04/2025
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
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Tiziano Piccardi @tiziano.bsky.social · 16/03/2025
New funding opportunity for Wikimedia-related research! Grants up to $150K available. Apply by April 16th: meta.wikimedia.org/wiki/Grants:...
meta.wikimedia.org
Grants:Programs/Wikimedia Research & Technology Fund/Wikimedia Research Fund - Meta
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JHU Computer Science @jhucompsci.bsky.social · 10/03/2025
2⃣ seminars coming up on Thursday with @tiziano.bsky.social and @uthsav.bsky.social! Check them out at bit.ly/3Fv5n7C and bit.ly/3FssGPr
Computer Science Seminar Series. Tuning Our Algorithmic Amplifiers: Embedding Pro-Social Values Into Online Platforms. March 13, 2025, 228 Malone Hall. Refreshments available 10:30 a.m. Seminar begins 10:45 a.m. Tiziano Piccardi, Stanford University.CS & BME Seminar Series: Machine Learning for Spatial and Network Biology. March 13, 2025, 12 p.m. 228 Malone Hall. Refreshments available at noon. Seminar begins 12:15 p.m. Uthsav Chitra, Eric and Wendy Schmidt Center at Broad Institute.
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Michael Bernstein @mbernst.bsky.social · 05/03/2025
Book 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!
Book cover of the Flash Teams book. "Flash Teams: Leading the Future of AI-enhanced, on-demand work". A lightning bolt image made out of square pixels.
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Tiziano Piccardi @tiziano.bsky.social · 04/03/2025
Thanks to @tilmanbayer.bsky.social for covering our work on Wikipedia readership in the latest Wikimedia Research newsletter! ➡️ arxiv.org/abs/2501.00939
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Kristina Gligoric @IC2S2 @gligoric.bsky.social · 17/02/2025
🤖🍲 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
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NLP for Wikipedia workshop (at ACL 2025) @wikinlp.bsky.social · 06/02/2025
The 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...
WikiNLP workshop flyer inviting contributions for provocations, datasets, and ongoing work on NLP+Wikimedia
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Akhil Arora @akhilarora.bsky.social · 16/01/2025
📢 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!
icwsm.org
ICWSM '25
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Tiziano Piccardi @tiziano.bsky.social · 05/01/2025
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
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Taha Yasseri @tahayasseri.bsky.social · 20/12/2024
Thrilled 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!
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Tiziano Piccardi @tiziano.bsky.social · 15/12/2024
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)
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 27/11/2024
New @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
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Tiziano Piccardi @tiziano.bsky.social · 25/11/2024
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! 🧵⬇️
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 14/11/2024
I made a starter pack with as many of the Twitter folk I follow that I could find: go.bsky.app/9u9wdBc
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Przemek Grabowicz 🇵🇱🇪🇸🇩🇪🇺🇸🇮🇪 @przemyslslaw.bsky.social · 14/11/2024
Here 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...
blueskydirectory.com
All - Bluesky Directory
A curated collection of all things relating to the Blue Sky social media platform.
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Manoel Horta Ribeiro @manoelhortaribeiro.bsky.social · 14/11/2024
I 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!
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Brian C. Keegan, Ph.D. @brianckeegan.com · 14/11/2024
Here 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...
github.com
GitHub - brianckeegan/bluesky-datascience: Exploratory notebooks for data science using Bluesky data
Exploratory notebooks for data science using Bluesky data - brianckeegan/bluesky-datascience
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Tiziano Piccardi @tiziano.bsky.social · 13/11/2024
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 🧵
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