Expertise index

Find the people who know the subject

Search public expertise, recent signals and peer connections—not follower popularity alone.

2,373 searchable experts 3,304 tracked across all sources

Showing 1–48 of 2,373. Trust means peer connections inside the directory; expertise labels come from public profile evidence.

Margaret Mitchell

Researcher at Hugging Face working on ML and ethics

@mmitchell.bsky.social

Why they matter Researcher at Hugging Face working on ML and ethics with public evidence across AI research and Responsible AI.

Researcher trying to shape AI towards positive outcomes. ML & Ethics +birds. Generally trying to do the right thing. TIME 100 | TED speaker | Senate testimony provider…

Latest measured signal The Limits of Human Oversight in the Age of AI Agents - Data & Society datasociety.net · 19d ago
1050 peer trust 3 signals / 30d active 8d ago

Melanie Mitchell

Professor at the Santa Fe Institute, AI and cognitive science

@melaniemitchell.bsky.social

Why they matter Professor at the Santa Fe Institute, AI and cognitive science with public evidence across AI research.

Professor, Santa Fe Institute. Research on AI, cognitive science, and complex systems. Website: https://melaniemitchell.me Substack: https://aiguide.substack.com/

Latest measured signal Fully Autonomous AI Agents Should Not be Developed arxiv.org · 9d ago
981 peer trust 4 signals / 30d active 13h ago

Meredith Whittaker

President of Signal, chief advisor to the AI Now Institute

@meredithmeredith.bsky.social

Why they matter President of Signal, chief advisor to the AI Now Institute with public evidence across Policy & governance.

President of Signal, Chief Advisor to AI Now Institute

890 peer trust 1 signals / 30d active 1d ago

Mark Riedl

Professor of AI at Georgia Tech, storytelling and safety

@markriedl.bsky.social

Why they matter Professor of AI at Georgia Tech, storytelling and safety with public evidence across AI research and AI business.

AI for storytelling, games, explainability, safety, ethics. Professor at Georgia Tech. Director of ML Center at GT. Time travel expert. Geek. Dad. he/him

Latest measured signal nature.com nature.com · 1d ago
877 peer trust 33 signals / 30d active 16h ago

Naomi Saphra

NLP and interpretability researcher

@nsaphra.bsky.social

Why they matter NLP and interpretability researcher with public evidence across AI research and Agents & robotics.

Waiting on a robot body. All opinions are universal and held by both employers and family. ML/NLP professor. nsaphra.net

Latest measured signal Life on the Uncanny Precipice | Naomi Saphra nsaphra.net · 8d ago
820 peer trust 3 signals / 30d active 7h ago

Maria Antoniak

Assistant professor of CS, NLP and cultural analytics

@mariaa.bsky.social

Why they matter Assistant professor of CS, NLP and cultural analytics with public evidence across AI research and Culture, work & education.

NLP, cultural analytics. Assistant Professor of CS at University of Colorado Boulder. Books, bikes, games, art. https://maria-antoniak.github.io

810 peer trust 15 signals / 30d active 7h ago

Nathan Lambert

Post-training researcher at Ai2, writes Interconnects

@natolambert.bsky.social

Why they matter Post-training researcher at Ai2, writes Interconnects with public evidence across Agents & robotics and AI research.

A LLN - large language Nathan - (RL, RLHF, society, robotics), athlete, yogi, chef Writes http://interconnects.ai At Ai2 via HuggingFace, Berkeley, and normal places

Latest measured signal Teaching Everyone to Fish for Tokens interconnects.ai · 18h ago
793 peer trust 26 signals / 30d active 9h ago

Arvind Narayanan

Princeton computer science professor, AI Snake Oil

@randomwalker.bsky.social

Why they matter Princeton computer science professor, AI Snake Oil with public evidence across AI research and Compute & infrastructure.

Princeton computer science prof. I write about the societal impact of AI, tech ethics, & social media platforms. https://www.cs.princeton.edu/~arvindn/ BOOK: AI Snake …

Latest measured signal Arvind Narayanan (@aisnakeoil) substack.com · 19d ago
784 peer trust 1 signals / 30d active 12d ago

Eugene Vinitsky

Reinforcement learning and autonomy researcher

@eugenevinitsky.bsky.social

Why they matter Reinforcement learning and autonomy researcher with public evidence across Agents & robotics and AI research.

Anti-cynic. Towards a weirder future. Reinforcement Learning, Autonomous Vehicles, transportation systems, the works. Asst. Prof at NYU https://emerge-lab.github.io ht…

Latest measured signal RLC 2026 rl-conference.cc · 1d ago
733 peer trust 17 signals / 30d active 7h ago

Abeba Birhane

Assistant Professor of AI, founder of the AI Accountability Lab

@abeba.blacksky.app

Why they matter Assistant Professor of AI, founder of the AI Accountability Lab with public evidence across AI research and AI business.

Founder & PI @aial.ie. Assistant Professor of AI, School of Computer Science & Statistics, @tcddublin.bsky.social AI accountability, AI audits & evaluation, critical d…

Latest measured signal cdt.org cdt.org · 1d ago
722 peer trust 10 signals / 30d active 1h ago

Jeremy Howard

Founding CEO of Answer.AI and fast.ai

@howard.fm

Why they matter Founding CEO of Answer.AI and fast.ai with public evidence across AI business and AI research.

https://Answer.AI & https://fast.ai founding CEO; previous: hon professor @ UQ; leader of masks4all; founding CEO Enlitic; founding president Kaggle; various other stuff…

710 peer trust 0 signals / 30d active 197d ago

Ted Underwood

Machine learning and literary history

@tedunderwood.com

Why they matter Machine learning and literary history with public evidence across AI research.

Uses machine learning to study literary imagination, and vice-versa. Likely to share news about AI & computational social science / Sozialwissenschaft / 社会科学 Informati…

Latest measured signal Teaching Everyone to Fish for Tokens interconnects.ai · 18h ago
648 peer trust 48 signals / 30d active 8h ago

Thomas Dietterich

Safe and robust AI/ML, former AAAI president

@tdietterich.bsky.social

Why they matter Safe and robust AI/ML, former AAAI president with public evidence across AI research.

Safe and robust AI/ML, computational sustainability. Former President AAAI and IMLS. Distinguished Professor Emeritus, Oregon State University. https://web.engr.oregon…

641 peer trust 0 signals / 30d active 13h ago

Anna Rogers

Associate professor of NLP, IT University of Copenhagen

@annarogers.bsky.social

Why they matter Associate professor of NLP, IT University of Copenhagen with public evidence across Models & releases and AI research.

Associate professor at IT University of Copenhagen: NLP, language models, interpretability, AI & society. Co-editor-in-chief of ACL Rolling Review. #NLProc #NLP

637 peer trust 0 signals / 30d active 6d ago

danah boyd

Technology and society researcher, founder of Data and Society

@zephoria.bsky.social

Why they matter Technology and society researcher, founder of Data and Society with public evidence across AI research and AI business.

STS researcher who likes to look at things sideways. Founded Data & Society. Topics: Census | Youth | Data | Society Professor of Communication, Cornell https://made-n…

632 peer trust 0 signals / 30d active 46d ago

Why they matter Researcher with public evidence across AI research.

I like tokens! Leading the Olmo data team at @ai2.bsky.social with @kylelo.bsky.social // all opinions sampled from my own stochastic parrot more at https://soldaini.net

625 peer trust 0 signals / 30d active 299d ago

Michael Bronstein

DeepMind Professor of AI at the University of Oxford

@mmbronstein.bsky.social

Why they matter DeepMind Professor of AI at the University of Oxford with public evidence across AI research and AI business.

DeepMind Professor of AI @Oxford Scientific Director @Aithyra Chief Scientist @ProximaBio ML Lead @ProjectCETI geometric deep learning, graph neural networks, generati…

620 peer trust 0 signals / 30d active 26d ago

Why they matter Researcher with public evidence across Models & releases and AI research.

Interested in cognition and artificial intelligence. Researcher at Anthropic; previously DeepMind, cognitive science at Stanford. Posts are mine. lampinen.github.io

Latest measured signal Symbols, neural networks, and mathematical intelligence infinitefaculty.substack.com · 13d ago
592 peer trust 3 signals / 30d active 3d ago

Stella Biderman

EleutherAI, open machine learning research

@stellaathena.bsky.social

Why they matter EleutherAI, open machine learning research with public evidence across AI research and Models & releases.

I make sure that OpenAI et al. aren't the only people who are able to study large scale AI systems.

580 peer trust 3 signals / 30d active 6d ago

Jasmijn Bastings

Senior Research Scientist in NLP at Google DeepMind

@jasmijn.bastings.me

Why they matter Senior Research Scientist in NLP at Google DeepMind with public evidence across AI research and Responsible AI.

I'm a Senior Research Scientist at Google DeepMind. I work on NLP & bias, fairness, and interpretability, and I'm especially interested in the interplay of gender, lan…

576 peer trust 0 signals / 30d active 5d ago

Why they matter Researcher with public evidence across AI research and AI business.

LM/NLP/ML researcher ¯\_(ツ)_/¯ yoavartzi.com / associate professor @ Cornell CS + Cornell Tech campus @ NYC / nlp.cornell.edu / associate faculty director @ arXiv.org …

Latest measured signal Open models, narrow interests, hard questions yoavartzi.com · 18d ago
576 peer trust 1 signals / 30d active 7d ago

Ethan Mollick

Professor at Wharton studying AI, work and education

@emollick.bsky.social

Why they matter Professor at Wharton studying AI, work and education with public evidence across Culture, work & education and AI research.

Professor at Wharton, studying AI and its implications for education, entrepreneurship, and work. Author of Co-Intelligence. Book: https://a.co/d/bC2kSj1 Substack: htt…

Latest measured signal AI is transforming politics---and how we understand it freesystems.substack.com · 21h ago
575 peer trust 24 signals / 30d active 21h ago

Jess Hamrick

Planning, reasoning and RL in LLMs at Reflection AI

@jhamrick.bsky.social

Why they matter Planning, reasoning and RL in LLMs at Reflection AI with public evidence across Models & releases and AI research.

Researching planning, reasoning, and RL in LLMs @ Reflection AI. Previously: Google DeepMind, UC Berkeley, MIT. I post about: AI 🤖, flowers 🌷, parenting 👶, public tran…

568 peer trust 0 signals / 30d active 109d ago

Gary Marcus

AI and cognitive science researcher and critic

@garymarcus.bsky.social

Why they matter AI and cognitive science researcher and critic with public evidence across AI business and AI research.

AI and cognitive science, Founder and CEO (Geometric Intelligence, acquired by Uber). 8 books including Guitar Zero, Rebooting AI and Taming Silicon Valley. Newsletter…

Latest measured signal Fearing an AI Chip Glut, Data Center Developers Are Choosin’ Texas theinformation.com · 18h ago
565 peer trust 4 signals / 30d active 3d ago

Michael Osborne

Professor of Machine Learning at the University of Oxford

@maosbot.bsky.social

Why they matter Professor of Machine Learning at the University of Oxford with public evidence across AI research and Agents & robotics.

Mother, wife, Australian, Professor of Machine Learning in Oxford. Long Covid, trans rights, music, reggae, AI must be good for humans, https://www.robots.ox.ac.uk/~mo…

559 peer trust 0 signals / 30d active 16d ago

Simon Willison

Independent AI researcher, creator of Datasette and LLM

@simonwillison.net

Why they matter Independent AI researcher, creator of Datasette and LLM with public evidence across AI research and Culture, work & education.

Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonw…

Latest measured signal Qwen 3.8 27B is excellent, but it defaults to wildly overthinking things simonwillison.net · 1h ago
552 peer trust 37 signals / 30d active 1h ago

Emma Strubell

Assistant professor at CMU LTI, machine learning and NLP

@strubell.bsky.social

Why they matter Assistant professor at CMU LTI, machine learning and NLP with public evidence across AI research and Models & releases.

assistant professor, @ltiatcmu.bsky.social. machine learning: LLMs and climate. 🏳️‍🌈🏳️‍⚧️ they/them/dad (2 dogs). pro-AI, anti-capitalist, anti-fascist. Website: strub…

541 peer trust 0 signals / 30d active 102d ago

Why they matter Researcher with public evidence across Responsible AI and AI research.

Postdoc at UW NLP 🏔️. #NLProc, computational social science, cultural analytics, responsible AI. she/her. Previously at Berkeley, Ai2, MSR, Stanford. Incoming assistan…

535 peer trust 2 signals / 30d active 10d ago