Peter Jansen ( @peterjansen-ai.bsky.social ) @peterjansen_ai
Associate Professor @uarizona; Visiting Scientist @allen_ai, AI/NLP; DiscoveryWorld; EntailmentBank; ScienceWorld; https://t.co/jWcY7TlbDR list. Tweets/opinions my own cognitiveai.org Tucson, AZ Joined March 2018-
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“Listen, science is hard, but I’m a serious person doing my best” 🤣 Possibly the best description of the confidence interval ever. xkcd.com/2048/
"Always reasoning" (ReAct) isn't optimal for LLM agents! 🧠 Our new paper identifies a "Goldilocks" effect: planning too frequently or not enough degrades performance. We show how to train agents to learn to dynamically allocate test-time compute when needed for best results. 👇
"Always reasoning" (ReAct) isn't optimal for LLM agents! 🧠 Our new paper identifies a "Goldilocks" effect: planning too frequently or not enough degrades performance. We show how to train agents to learn to dynamically allocate test-time compute when needed for best results. 👇
We are proposing the second workshop on AI & Scientific Discovery at EACL/ACL. The workshop will explore how AI can advance scientific discovery. Please use this Google form to indicate your interest: docs.google.com/forms/d/e/1FAI… More in the 🧵! Please share! #MLSky 🧠
Results from the first part of our fourth LIGO @ego_virgo @KAGRA_PR observing run are out today! We're pleased to share the largest catalog of gravitational-wave observations with more discoveries of black holes and neutron stars 📰 arxiv.org/abs/2508.18082 #O4IsHere #GWTC4
Oh hey so we did do this a few years ago for grade school science. Would love to see ppl get more of these Text Worlds up and running! arxiv.org/abs/2203.07540
Oh hey so we did do this a few years ago for grade school science. Would love to see ppl get more of these Text Worlds up and running! arxiv.org/abs/2203.07540 https://t.co/IOkJF5G3Oe
Introducing Asta—our bold initiative to accelerate science with trustworthy, capable agents, benchmarks, & developer resources that bring clarity to the landscape of scientific AI + agents. 🧵
🚀 In March, we launched Paper Finder, an LLM-powered literature search agent that surfaces papers other tools miss. Now, we’re releasing an open-source snapshot to enable others to inspect & build on it—and reproduce the results. 🧵
1/ 📢 @CosmikNetwork has been awarded $1M in grant funding by @open_phil and @AsteraInstitute! These generous grants will support our development of Semble - a social "micro-knowledge" network for researchers. Think Are.na + Goodreads for research!
Well that's concerning...
🤖✨ What if models that take action in the physical world could think through your instructions? Meet MolmoAct, our new fully open Action Reasoning Model (ARM) that does just that. 🧵
📢I'm joining NYU (Courant CS + Center for Data Science) starting this fall! I’m excited to connect with new NYU colleagues and keep working on LLM reasoning, reliability, coding, creativity, and more! I’m also looking to build connections in the NYC area more broadly. Please…
Usage of LLMs to write papers📈 "LLM modification estimates were higher among papers from first authors who post preprints more frequently"
#ILLINOIS CS professor Heng Ji is making waves in AI with mCLM, a groundbreaking tool that automates block-based chemistry! 🧪🤖✨ ▶️ bit.ly/4oCB5ST
We give this system 3 stars! ⭐⭐⭐ Webb revealed strong evidence of a giant gas planet orbiting one of the three stars (as shown in this artist illustration) in the Alpha Centauri system, located four light years away. go.nasa.gov/3Jmbopa
New @Nature The possibility that lithium deficiency is a driver of Alzheimer's disease. Experimental model shows Li depletion impedes amyloid clearance, and repletion in humans could be achieved with low doses nature.com/articles/s4158…
The report of Goedel-Prover-V2 is on arXiv now arxiv.org/pdf/2508.03613 . Check out the details on self-correction, large scale scaffolded data sythesis framework, and the magical model averaging.
NSF is investing up to $100 million in a new national network of AI-programmable cloud laboratories. The program aims to broaden access to advanced technology to accelerate scientific discovery and innovation. ☁️ bit.ly/4m3BR9z
Announcing coding agent routing - dynamically send prompts to different LLMs based on task types like debugging, understanding, generation, etc. Uses a small 1.5B preference-aligned LLM router that decouples route selection from model assignment. More details here:…

(((ل()(ل() 'yoav)))... @yoavgo
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Akari Asai @AkariAsai
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Jim Fan @DrJimFan
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Delip Rao e/σ @deliprao
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Ai2 @allen_ai
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(((ل()(ل() 'yoav)))... @yoavgo
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Andrej Karpathy @karpathy
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AK @_akhaliq
425K Followers 3K Following AI research paper tweets, ML @Gradio (acq. by @HuggingFace 🤗) dm for promo ,submit papers here: https://t.co/UzmYN5YmrQ
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Ai2 @allen_ai
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