Daniel Yamins (@dyamins) header
Daniel Yamins (@dyamins) profile picture

CS, psych, and neuro prof @ Stanford. NeuroAI and "regular AI". Also pianos, harpsichords, pipe organs, and bonsai. https://nitter.cf/t.co/xCFbmgSz48

Stanford, CA
Joined April 2009
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Streams of thought for natural reasoning in the physical world. *This is PSI-0.6 release* Congrats @khai_loong_aw @KlemenKotar at the PSI team!
Chain-of-thought transformed AI reasoning, but it is limited to words. What's the physical-world analogue? Introducing Ψ-0.6, one model that reasons in *streams of thought*: words, depth, motion, camera pose, and imagined scenes. And it learns when to use which! 🧵
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1/ Animals explore without rewards, tasks, or instructions. What computational objective drives that autonomy? We trained virtual flies with intrinsic-motivation algorithms to see which best reproduce real fly behavior and brain activity. Work with @rdkeller and @aran_nayebi !🧵
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How do children learn the meanings of their first words? One idea is cross-situational learning: tracking which words go with which things across many situations. In a new preprint, we test this idea at scale on video from children's own perspective 🧵 arxiv.org/abs/2610.31842
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Introducing the Precision Brain Atlas: high-resolution neural recordings from 70 patients across 12 academic medical centers. A growing resource for studying human neural function- and a step toward a Whole-Brain Interface.
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People are prophecying the death of math but actually in the last few months is the first time that I have even started thinking about hiring a math PhD as a postdoc, because the prospects of doing advanced math in my area are so much brighter now.
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We’ve all seen the cool “Astra for robotics” demos. But behind the scenes? Slow rollouts, hand-engineered APIs, and/or simulated behaviors that struggle on real robots. How do we make coding agent actually work in the physical world? 🦾 Introducing SimEX: Simulation-Integrated Robotics AutoResearch 🧵 arxiv.org/abs/2609.38982
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Another update from our topography work from (high-schooler!) Navneet Prakash. Navneet trained path-integrating RNNs with TopoLoss and found that they recover a much more brain-like center-surround RF connectivity structure than baseline models (w/o any post-hoc sorting)!
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...that was supposed to read "model-brain alignment is now strong enough" 🤦 Posting early morning on the way to the airport took a toll
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Questions in Systems Neuroscience are indeed changing, but to me the new ones are even more exciting! Some years ago, @JamesJDiCarlo showed an old clip of Hans-Lukas Teuber (the founder of @mitbrainandcog: bcs.mit.edu/events/hans-luka…) saying that science goes through stages: explain, predict, control. #NeuroAI first moved us to predict, and I think it's super exciting that we're firmly moving into control: - prediction is pretty well established by now (e.g. Brain-Score.org; algonautsproject.com), although models are not perfect and can fail on simple stimuli (what is missing?) - the field is actually making progress on a theory for why this works (@dyamins & @aran_nayebi arxiv.org/abs/2607.08561, @tyrell_turing nature.com/articles/s41593-0…). - model-synthesized stimuli can neuromodulate visual cortex and the human language network (@PouyaBashivan @KohitijKar science.org/doi/10.1126/scie…, Walker @sinzlab pubmed.ncbi.nlm.nih.gov/3168…, @GretaTuckute nature.com/articles/s41562-0…, and more) - even for invasive techniques, topographic models predict and steer the behavioral effects of microstimulation; optogenetics and muscimol (proceedings.iclr.cc/paper_fi…, biorxiv.org/content/10.1101/…) - and finally model-brain alignment is not strong enough that we can model atypical processing in dyslexia, autism, aphasia, and anhedonia (@melikahnd_1 arxiv.org/abs/2509.24597, pubmed.ncbi.nlm.nih.gov/3570…, arxiv.org/abs/2607.11621, @melikahnd_1 anhedonic-ai.epfl.ch) How processing breaks down, and how we can push it back toward healthy, are very much algorithmic questions about the brain with a clear real-world impact. And now we can actually test them, how cool is that!
I had a feeling recently that seems to be corroborated by chats with colleagues, so I decided to share it here. A lot of systems neuroscientists driven by algorithmic-level questions are going through what looks and feels like a research depression. 🧵 (1/n)
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Yeah seriously @SakanaAILabs ImageNet or it didn’t happen… my guess is the true state of the art in bioplausible learning surpassed this years ago …
Hmm, these results are only on MNIST, which even trivial methods like Feedback Alignment work well on. Of course, everything works on MNIST! 😉 Which is why we focused on bioplausible learning that scaled w/ backprop on ImageNet 6 years ago... arxiv.org/abs/2003.01513
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CMU is hiring an Assistant Professor in NeuroAI! Come join our awesome NeuroAI community 🧠🤖: apply.interfolio.com/189268
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With all the Astra demos, there might be a feeling in robotics of a bitter lesson taking hold? I think this moment is rather the opposite. Astra works *because* it leverages traditional human-engineered methods as its tools. (...for now)
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Hiring postdocs @EPFL: please reach out and/or apply to the AI Center fellowship epfl.ch/research/funding/epf…. My #NeuroAI group is excited about testing and building models of brain and behavior, from sensory through language to cognition, and from healthy to dysfunction (treatment)!
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To learn how brains compute, we need to experimentally adjudicate among competing computational hypotheses. How do we do this in the age of complex neural network models? New review paper: “Making models disagree to learn how brains compute” with @TalGolanNeuro, @SchuettHeiko
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My latest substack post describes detailed empirical results for RSA vs ridge regression across a wide range of visual system tests. I think we're genuinely finally building a better sense of how all these things are related. Substack: danyamins.substack.com/p/con… We're testing the consequences of RSA contravariance theory: danyamins.substack.com/p/con… TL;DR: - RSA and ridge regression are actually pretty well correlated, especially in high-quality fMRI data. - The theoretically predicted Ridge-RSA formula works decently! - BUT: strong behavioral tests expose issues with raw RSA. Ridge model-brain similarity is uniformly more predictive of behavioral match across MANY metrics. - And the same is true for low-level visual phenomena: Ridge-based model-brain similarity better predicts 20+ V1 physiology metrics. enjoy!
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The Contravariance theory for RSA (and CKA) is here. Substack: danyamins.substack.com/p/con… Gory mathematical details: arxiv.org/abs/2607.08561 TL;DR: - Theiss @ScienceLukas @ermgrant @SaxeLab show RSA decomposes into a "task relevant core geometry" part and a "task irrelevant" nuisance component. The nuisances can dominate the RSA badly. - The nuisances can be removed by projecting onto the privileged axes. Once you do that, full contravariance applies to the task-relevant core geometry RSA. - In the hard-task condition, the three metrics (privileged axes, linear regression, and task-relevant RSA) all line up.
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Come work with us! Kempner fellowship is a great opportunity to do exciting research on neuroAI, ML, and theory.
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