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Sami Beaumont

@samibeaumont.bsky.social
65 followers 103 following 66 posts

Psychiatrist @ GHU Paris psychiatry and neurosciences Research in computational cognitive science @computationalbrain.bsky.social

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Sami Beaumont @samibeaumont.bsky.social · 04/06/2026
A highly competitive environnement where ressources are spent in evaluation comittees so only the best can survive.
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Sami Beaumont @samibeaumont.bsky.social · 29/05/2026
Get on board, there's no time for questions !
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Mehdi Khamassi @khamascience.bsky.social · 22/05/2026
Ça se passe en direct sous nos yeux. Nous ne pourrons pas dire que nous ne savions pas. www.mediapart.fr/journal/inte... Pour celles et ceux qui souhaitent en apprendre davantage (ATTENTION, coeurs sensibles s'abstenir) : www.btselem.org/publications...; www.ohchr.org/sites/defaul...
Copie d'écran d'un article de Mediapart intitulé 'Vidéo de Ben Gvir : quand les prisonniers sont palestiniens, l’Occident regarde ailleurs', 22 mai 2026.
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Sami Beaumont @samibeaumont.bsky.social · 01/05/2026
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Berna Devezer @devezer.bsky.social · 30/04/2026
📣 The difference between replicable and not replicable is not itself scientifically replicable. 📣 New work with Erkan Buzbas, showing that verdicts such as "X% of results replicated" are based on an inferential machinery that doesn't work. arxiv.org/abs/2604.26268
Screenshot of a paper's title page. Title: "The Difference Between 'Replicable' and 'Not replicable' is not Itself Scientifically Replicable". Authors: Berna Devezer and Erkan O. Buzbas, both at the University of Idaho — Devezer in the Department of Business and the Institute for Modeling Collaboration and Innovation, Buzbas in the Department of Mathematics and Statistical Science. Authors contributed equally. Corresponding author: bdevezer@uidaho.edu.
Abstract: Replication studies estimate the replicability rate of scientific results by aggregating binary verdicts of experiments. Exact replications are rarely attainable, so most replication sequences are non-exact. Experiments differ in ways that matter and do not share a single common data-generating process. We formalize two statistical interpretations of this non-exactness. In a shared latent rate model (benchmark), experiments are exchangeable and depend on a common random replicability rate. In a conditionally independent rates model (operational), each experiment has its own replicability rate drawn independently from a population distribution. Under the shared latent rate model, even small variability among replicability rates induces an irreducible variance floor on the estimated mean replicability rate that cannot be eliminated by adding more replications. Under the conditionally independent rates model, the degree of non-exactness is not identifiable from standard replication data, because one binary verdict per experiment contains no information about between-experiment heterogeneity. Researchers therefore cannot tell which precision regime they are operating in or whether high- and low-replicability sequences can be distinguished in principle. As a result, the usual data structure of one binary verdict per experiment cannot support reliable demarcation between "replicable" and "not replicable" results and systematically understates uncertainty, making high- and low-replicability sequences appear discrim…
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Cédric Brun @cedricbrun.bsky.social · 27/04/2026
Quelques échanges récents ici m’ont donné envie de proposer un panorama de la philosophie des sciences contemporaine. Non pour défendre une corporation, mais pour corriger une image assez datée de la discipline. Je resterai volontairement assez schématique pour ne pas alourdir un thread long. 1/n
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Colin @colin-fraser.net · 12/04/2026
A popular account of the so-called deep learning revolution is that all natural understanding of the problem can be abdicated; we just throw all the data in the NN and gradient descent goes brr, but that’s not right. We have to have the right structural prior and a NN architecture to express it.
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Joao Barbosa @jbarbosa.org · 03/04/2026
Wanna do neuroscience in Paris but can't find interesting lab? Want to come do a sabbatical but don't know who to collaborate? Check this webpage aggregating ~all the neuroscience labs (+200) in Paris. ⚠️only the information of 'verified' profiles is reliable⚠️ Please retweet 🙏 parisneuro.fr
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Minas Karamanis @minaskar.bsky.social · 30/03/2026
Hey, I wrote a thing about AI in astrophysics ergosphere.blog/posts/the-ma...
ergosphere.blog
The machines are fine. I'm worried about us.
On AI agents, grunt work, and the part of science that isn't replaceable.
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
First repost is a bot give me a break
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
Also I'm a bit worried that the feeling of urgency to use llms comes from the generalized FOMO in academia. To me the most rational position is that we still don't know how exactly llms should be used (as not using it for X is bad practice) so the fear of not being relevant does not seem appropriate
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
I agree there are best practices we should follow, and reinventing the wheel is highly inefficient, but as best practices also evolve I think it's still a good exercise (for students) to know how to do what they ask Claude to do (and trust that actual people validated existing packages...)
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
Anyway, I think making science from multiple standpoints is more efficient at the end than producing multiple instances of the same averaged perspective. For me it's hard to tell when I'm trading too much standardization for a bit of efficiency
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
Giving up a particular stance (yours) to the apparent purity and generality of a llm precisely what makes the outcome less relevant. And I think the line between what is integral to your standpoint vs what is contingent is finer that it seems
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
I think that this idea of pure statistical tool capable of summarizing the whole literature, generating research questions and code to answer them is misleading and self defeating
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
And they are fast for many repetitive tasks (e.g. coding) so not using them seems like a waste of ressources
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
The fact that they produce standardized answers based on basically everything available online, make them sound like neutral and balanced, a perfect starting point for scientific inquiry
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
Random thoughts about llms in academia. I think the most risky misconception in this space is not the appeal (or fear) of artificial general intelligence, but rather of "pure" intelligence, i.e. llms are somehow "clean", efficient, verbose, they look like a way to improve practice
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Sami Beaumont @samibeaumont.bsky.social · 02/04/2026
I don't think we ever learned implementation for the sake of it, but knowing how to do things is the kind of expertise you need to use llms safely. I still believe students should know how a model fitting pipeline should look like before using Claude to do it
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Sami Beaumont @samibeaumont.bsky.social · 18/02/2026
Unsurprisingly we don't read similar opinion pieces about "the right" while the US gouvernement unplugs vaccines research.
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Sami Beaumont @samibeaumont.bsky.social · 10/02/2026
(critically as embedded in a larger background knowledge and experience, not as being dismissive). "Ne soyez pas le secrétaire des malades". Which could be modernized as "don't be a statistical parrot"
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Sami Beaumont @samibeaumont.bsky.social · 10/02/2026
He laid down principles of clinical examinations that, to me, highlight all the complexity and non reducibility of clinical practice. Notably the tension between 2 imperatives 1) be aware of the uniqueness of each patient ("individualité maladive") and 2) assess critically what they report
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Sami Beaumont @samibeaumont.bsky.social · 10/02/2026
This is a critical point. One could say that inferring what questions are relevant in a clinical examination is just another instance of pattern detection. I believe it misses the core of what clinical skills actually are. In psychiatry the teaching of JP Falret (1874) is still highly relevant
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Mehdi Khamassi @khamascience.bsky.social · 08/02/2026
Ça se passe en direct sous nos yeux. Nous ne pourrons pas dire que nous ne savions pas. www.972mag.com/gaza-foreign...
Screenshot of an article in +972 magazine entitled 'The legal fight to open Gaza to foreign press has failed. It’s time to change course', Feb. 6, 2026.
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Sami Beaumont @samibeaumont.bsky.social · 04/02/2026
They also spread the message to kids that smoking is an adult's choice, which is both subtly incitative and carefully avoiding public health issues. Similarly the message that only specialists should use llms bypasses the existential question of why should my google search result in a word salad ?
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Joao Barbosa @jbarbosa.org · 27/01/2026
Postdoc position in Paris: come help develop new generation human brain computer interfaces ⚡🧠💻 Interested? Contact me if you have experience with machine learning (e.g. simulation-based inference, RL, generative/diffusion models) or dynamical systems. See below for + details and retweet 🙏
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Sami Beaumont @samibeaumont.bsky.social · 28/01/2026
In the brain causal interventions on a specific region or circuit does not imply that this circuit is a module (= encapsulated system dedicated to this function whose output would be indépendant from other modules)
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Sami Beaumont @samibeaumont.bsky.social · 28/01/2026
Lesion studies can demonstrate the specificity of function but the limits can be more and more fuzzy as the scope increases. A general theory of human physiology would require transversal approaches (e.g. ontogeny) in addition to individual systems characterisation
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Sami Beaumont @samibeaumont.bsky.social · 28/01/2026
I like the analogy with organs but it can be misleading as looking for modules as physical entities would be akin to phrenology. But i agree that describing something as a module (e.g. immune system) does not imply an explicit design. However i think question remains about the limits of modularity
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Sami Beaumont @samibeaumont.bsky.social · 28/01/2026
Fodor was very critical of this theory as modularity was a relevant description for low level processes. I think the current debate in neuroscience is about that : can we find arguments for low level functions that are completely encapsulated from other modules ?
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Sami Beaumont @samibeaumont.bsky.social · 28/01/2026
In my understanding the defining characteristic of modularity is functionnal encapsulation. Some have argued that the mind is massively modular i.e. no transversal process, and that really sounds unnatural and more like software engineering
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Sami Beaumont @samibeaumont.bsky.social · 16/01/2026
I'd say the term "model" is better suited than "tool". I see why they can be framed as bad models of language from an explanatory cognitive perspective, but i think they are not even bad tools
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Philippe Domenech @philippedomenech.bsky.social · 15/01/2026
🚨 !!! New preprint !!! 🚨 MULTIMODHAL (phase 3, multicenter double-blind RCT): fMRI “symptom-capture”–guided neuronavigation significantly improves 1-Hz rTMS outcomes for drug-resistant auditory verbal hallucinations vs standard T3P3 targeting. 🧠🟦 #rTMS #Psychiatry #Schizophrenia #fMRI
medrxiv.org
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Sami Beaumont @samibeaumont.bsky.social · 06/01/2026
But companies continuously claim the inevitability of it and that safeguards are possible to prevent such use cases. I'm saying that taking full accountability is the only logical consequence. Otherwise they have to admit they cannot control shit and remove it entirely.
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Sami Beaumont @samibeaumont.bsky.social · 06/01/2026
Yes that's why we shouldn't have this into the website in the first place
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Sami Beaumont @samibeaumont.bsky.social · 06/01/2026
I think complying with the law, especially regarding child porn, is a pretty low standard already. But is it possible is the question ideed. I believe it's not and we don't need to pollute already toxic social networks with garbage generating bots.
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Sami Beaumont @samibeaumont.bsky.social · 06/01/2026
It's either (1) safeguarding llms is not possible and we should a) ask if they are necessary everywhere b) regulate them ; or (2) safeguarding is possible (as llms are marketed) and companies should be accountable for not implementing it correctly. They can't have it both ways.
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David Monniaux @monniauxd.bsky.social · 06/01/2026
Pour bloquer Sci Hub il y a du monde pour bloquer X en revanche..
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Thanks ! That's the charitable account though
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
In what "regime" the concept of hydrogen is fuzzy ?
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Yep surprisingly unsurprising
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
That was just my very subjective selection, fortunately you have all of them here, by @irisvanrooij.bsky.social herself ! bsky.app/profile/iris...
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Unconstrained bayesian inference is intractable, but abduction is even more difficult ! A timely consequence is that science cannot be automatized... escholarship.org/uc/item/8cr8...
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Beware of intuitions regarding tractability: segmentation is tractable even in a large space. However this requires to go beyong intuitive solutions onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
A Computational Complexity Perspective on Segmentation as a Cognitive Subcomputation
Adolfi, Wareham l& van Rooij (2022) examine the computational properties of segmentation; a subcomputation conjectured to underlie cognitive capacities across domains such as speech recognition, musi...
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
This one is conceptually similar to the approximation one: you can't move all the tractability burden to evolution. Evolution of intractable rationnality is tractable though ! onlinelibrary.wiley.com/doi/full/10....
onlinelibrary.wiley.com
How Intractability Spans the Cognitive and Evolutionary Levels of Explanation
This paper focuses on the cognitive/computational and evolutionary levels. It describes three proposals to make cognition computationally tractable, namely: Resource Rationality, the Adaptive Toolbox...
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Yes bayesian inference is intractable, but studying its complexity bottlenecks gives experimental predictions ! www.sciencedirect.com/science/arti...
sciencedirect.com
A computational-level explanation of the speed of goal inference
The ability to understand the goals that drive another person’s actions is an important social and cognitive skill. This is no trivial task, because a…
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
Everytime i want to say something along the lines of "this normative principle would be intractable but our algorithmic model is an approximation so all fine" i pinch my self thinking of this paper philpapers.org/rec/KWIBII
philpapers.org
Johan Kwisthout, Todd Wareham & Iris van Rooij, Bayesian Intractability Is Not an Ailment That Approximation Can Cure - PhilPapers
Bayesian models are often criticized for postulating computations that are computationally intractable (e.g., NP-hard) and therefore implausibly performed by our resource-bounded minds/brains. Our let...
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
I first encoutered the tractable cognition thesis in this book. I often return to it with pleasure. This was an excellent first exposition to the topic, especially for someone familiair with experimental cog sci but with no background in computer science cognitionandintractability.com
cognitionandintractability.com
Cognition and Intractability
A Guide to Classical and Parameterized Complexity Analysis
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Sami Beaumont @samibeaumont.bsky.social · 25/12/2025
While some weird guys decided to out themselves as @irisvanrooij.bsky.social haters (whatever it means), i think it's time to out myself as a longtime fan of her (and colleagues') work. A short thread of my favorites:
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Erik Angner @erikangner.com · 27/11/2025
"Runctitiononal features"? "Medical fymblal"? "1 Tol Line storee"? This gets worse the longer you look at it. But it's got to be good, because it was published in Nature Scientific Reports last week: www.nature.com/articles/s41... h/t @asa.tsbalans.se
Infographic with AI slop published in Nature Scientific Reports
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