Dr. Ruchira Datta's Avatar

Dr. Ruchira Datta

@ruchiradatta

Mathematician and computer scientist. Have done research in game theory, AI/ML for NLP, and computational biology (phylogenomics, cancer, and immunology). Now working on making energy-efficient AI/ML. Vegetarian.

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Latest posts by Dr. Ruchira Datta @ruchiradatta

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Popular Python AI library Ultralytics compromised with a crypto miner Another day, another major Python Package Index compromise leads to a major security problem.

Another day, another major Python Package Index compromise leads to a major security problem. opensourcewatch.beehiiv.com/p/popular-py... via @sjvn.bsky.social

The story's moral is that you really must check and recheck any third-party code you pull into your program. #security #programming #AI

09.12.2024 16:40 πŸ‘ 5 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1

folks, please don't submit LLM-generated PRs to open source projects. It makes no sense.

If the maintainers want to use an LLM to fix an issue, they can use Claude or whatnot directly. They don't need you as intermediary, that's just silly.

If they don't want to use LLMs, they have reasons.

28.02.2026 03:10 πŸ‘ 69 πŸ” 13 πŸ’¬ 0 πŸ“Œ 0
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Understanding large-scale cooperation in a nonlinear, interconnected world - Nature Computational Science Large-scale cooperation is characterized by complex interaction patterns with nonlinear outcomes. Deepening our understanding may be critical to addressing real-world collective challenges.

πŸ“’In the second opinion piece of our 5-year anniversary Series, @evodynamics.bsky.social discusses the field of collective cooperation and the challenges ahead. www.nature.com/articles/s43... #evosky #cssky

πŸ”“ rdcu.be/e5SIY

26.02.2026 21:54 πŸ‘ 7 πŸ” 3 πŸ’¬ 0 πŸ“Œ 1
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The first-ever Lean in Munich meetup happened this week! πŸŽ₯ Watch Sebastian Ullrich's full talk on Lean's foundations, software verification, and AI: youtube.com/watch?v=2Dr2149l_9Y

#leanlang #leanprover #formalverification #mathematics

26.02.2026 23:06 πŸ‘ 7 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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Eco-evolutionary dynamics shaping biodiversity in the urban mosaic Nature Reviews Biodiversity, Published online: 18 February 2026; doi:10.1038/s44358-026-00138-0The urban mosaic is a complex assimilation of habitats, biotic and abiotic factors with eco-evolutionary influence on local and regional biodiversity. In this Review, the authors explore this urban mosaic through the lens of island biogeography, describing the eco-evolutionary dynamics influencing species adaptation to urban landscapes.

ICYMI: New online! Eco-evolutionary dynamics shaping biodiversity in the urban mosaic

26.02.2026 00:26 πŸ‘ 3 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
OSF

A new preprint, co-authored with @johnwkrakauer.bsky.social:

The Deliberation Taboo

Cognitive science is, nominally, the science of thinking. We argue that the field has no theory of what thinking is and, even worse, that the topic has largely dropped out of focus. 1/

osf.io/preprints/ps...

24.02.2026 13:53 πŸ‘ 136 πŸ” 52 πŸ’¬ 4 πŸ“Œ 11

Thank you!

25.02.2026 04:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Large-scale online deanonymization with LLMs We show that large language models can be used to perform at-scale deanonymization. With full Internet access, our agent can re-identify Hacker News users and Anthropic Interviewer participants at hig...

And right on schedule: there goes pseudonymity on the Internet. arxiv.org/abs/2602.16800

25.02.2026 00:37 πŸ‘ 96 πŸ” 61 πŸ’¬ 4 πŸ“Œ 12
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Screening, sorting, and the feedback cycles that imperil peer review The process of peer review is vital to contemporary science, but is also under enormous strain. This study uses mathematical models to dissect the threats to the long-term viability of peer review, su...

1. Kevin Gross and I have a new paper out today PLOS Biology.

We used economic models based around screening games and the market for unpaid labor to highlight a meltdown cycle threatening peer review.

24.02.2026 20:54 πŸ‘ 324 πŸ” 132 πŸ’¬ 8 πŸ“Œ 17
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So the retina wasn’t built de novo.

Instead, it is likely rooted in an ancestrally median, already complex eye β€” lateralized & rewired to solve early chordate sensory challenges.

More here:
www.biorxiv.org/content/10.1...
and curious what you think!

8/8

12.09.2025 12:58 πŸ‘ 7 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
Front cover of my book, titled "Comparative musicology: Evolution, universals, and the science of the world's music" (published today by Oxford University Press)

Front cover of my book, titled "Comparative musicology: Evolution, universals, and the science of the world's music" (published today by Oxford University Press)

1st of my 4-page essay published in Nature today titled "Music is not a universal language - but it can bring us together when words fail"
Picture caption: "Puerto Rican rapper Bad Bunny (centre) performed in Spanish at the half-time show of the 2026 American Football Super Bowl LX."

1st of my 4-page essay published in Nature today titled "Music is not a universal language - but it can bring us together when words fail" Picture caption: "Puerto Rican rapper Bad Bunny (centre) performed in Spanish at the half-time show of the 2026 American Football Super Bowl LX."

My book is now published! 🌏🎢πŸ§ͺ

You can download it for free at academic.oup.com/book/62353 - I’d be grateful if you do!
I also published an accessible summary with audio/video today in @nature.com: www.nature.com/articles/d41...
Try reading that first, then give the whole book a read if you like it!

23.02.2026 12:10 πŸ‘ 108 πŸ” 50 πŸ’¬ 8 πŸ“Œ 5
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We've posted a new fMRI study of semantic relations (has-part, is-a, made-of, etc.), a key aspect of language. We find that relations are represented in the same brain regions as are other semantic concepts, though voxels tend to be selective for only one relation or another.
doi.org/10.64898/202...

23.02.2026 21:06 πŸ‘ 55 πŸ” 20 πŸ’¬ 1 πŸ“Œ 2
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There are problems with a geoengineering techno-fix for the climate crisis | Mike Hulme Geoengineering does little to defuse most of the risks that really matter for people – and it runs the risk of making some harms worse

Injecting particulates into the atmosphere isn’t a magical fix for the climate crisis, says Prof Mike Hulme

- #Geoengineering does little to defuse most of the risks that really matter for people – and it runs the risk of making some harms worse

www.theguardian.com/commentisfre...

23.02.2026 12:26 πŸ‘ 44 πŸ” 20 πŸ’¬ 3 πŸ“Œ 0
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Could targeting viruses be a new hope against neurodegenerative diseases? Current therapies for neurodegenerative diseases largely manage symptoms and only modestly slow progression. This Perspective highlights emerging evidence that vaccines and antivirals may lower dement...

'Viral infections thus may appear to add fuel to the multifactorial fire of neurodegeneration, whether by direct damage or via the immune sys. To us, this insight may also give hope for future preventive strategies, as targeting infections could reduce the risk of getting neurodegenerative diseases'

21.02.2026 19:53 πŸ‘ 9 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
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Yet another good reason to mute or block the trolls in your life

These negative social ties--known as 'hasslers"--are chronic stressors and are linked to impaired physical health and faster aging.
www.pnas.org/doi/10.1073/...

21.02.2026 17:15 πŸ‘ 151 πŸ” 56 πŸ’¬ 6 πŸ“Œ 18
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Subliminal Effects in Your Data: A General Mechanism via Log-Linearity Training modern large language models (LLMs) has become a veritable smorgasbord of algorithms and datasets designed to elicit particular behaviors, making it critical to develop techniques to understa...

Really liked this paper which ties up two observations that are equally mindboggling (low-rank logits & subliminal/weird generalization effects) and presents one other such observation

arxiv.org/abs/2602.04863

19.02.2026 22:20 πŸ‘ 20 πŸ” 5 πŸ’¬ 2 πŸ“Œ 0

#AcademicSky #PsychSciSky

Psychology:

✳️ It's imperative to examine non-WEIRD samples

Also Psychology:

✳️ Let's use AI to do our research & scholarship*

* despite its very strong pro-White, pro-male, pro-heterosexual biases (bc data it's fed emphasizes subsets of the world's population)

20.02.2026 02:40 πŸ‘ 17 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

Thank you for sharing! Is there an introduction to current neuroscience from the dynamical systems point of view, for mathematicians who are familiar with dynamical systems, though not with current neuroscience?

17.02.2026 23:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Last call for this PhD studentship! Deadline Sun 22nd Feb

17.02.2026 10:41 πŸ‘ 5 πŸ” 10 πŸ’¬ 0 πŸ“Œ 0
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Modern AI is simply no match for the complexity likely required for harboring consciousness, says Jaan Aru He argues that our brain’s computations are of a completely different nature than any artificial intelligence because they take place across many spatial and temporal scales and are inextricably…

In the latest @braininspired.bsky.social, @jaanaru.bsky.social argues that our brain’s computations are of a different nature than any AI; brains compute across spatial and temporal scales, and the computations are entwined with the biological materials.

www.thetransmitter.org/brain-inspir...

11.02.2026 15:43 πŸ‘ 17 πŸ” 9 πŸ’¬ 0 πŸ“Œ 2
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rustfs / rustfs πŸš€2.3x faster than MinIO for 4KB object payloads. RustFS is an open-source, S3-compatible high-performance object storage system supporting migration and coexistence with other S3-compatible platforms such as MinIO and Ceph.

rustfs: πŸš€2.3x faster than MinIO for 4KB object payloads. RustFS is an open-source, S3-compatible high-performance object storage system supporting migration and coexistence with other S3-compatible platforms such as MinIO and Ceph. β˜…21512 https://github.com/rustfs/rustfs

15.02.2026 01:16 πŸ‘ 11 πŸ” 2 πŸ’¬ 0 πŸ“Œ 1
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How to (and why you should) make a personal website Over the last couple of weeks, we've seen Meta push anti-LGBQT "moderation" policies and TikTok shut down after being banned by the US government -- further confirmation that no social media site will...

And if you just want a simple landing page website, here's a quick guide. You can do it!

gregpak.com/how-and-why-...

15.02.2026 00:27 πŸ‘ 129 πŸ” 17 πŸ’¬ 3 πŸ“Œ 1
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The ageing immune system as a driver of systemic ageing Nature Reviews Immunology, Published online: 13 February 2026; doi:10.1038/s41577-026-01269-3Ageing of the immune system is now realized to drive systemic ageing, and there is interest in targeting immune ageing in order to promote healthy ageing. Here, the authors detail how ageing affects different immune cell populations and discuss strategies to rejuvenate the immune system in order to extend healthspan.

ICYMI: The ageing immune system as a driver of systemic ageing

14.02.2026 15:04 πŸ‘ 14 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0
Maximum stress the skin can endure in a number of rodent taxa. The naked mole-rat is an outlier, combining high resilience with thin skin.

Maximum stress the skin can endure in a number of rodent taxa. The naked mole-rat is an outlier, combining high resilience with thin skin.

The skin of the naked mole-rat is actually very stiff – and can endure (relatively) enormous mechanical stress, as tensile tests revealed. We argue that this relates to nakedness, since the lack of pelage allows the dermal collagen network to be more extensive and resilient. (4/8)

14.02.2026 13:45 πŸ‘ 3 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
Group of Ansell's mole-rats huddling

Group of Ansell's mole-rats huddling

Do subterranean mammals have hyper-elastic skin thanks to super-sized hyaluronan (HA) polymers?

We challenge this popular idea in a new preprint, presenting the first skin elasticity measurements of burrowing rodents & HA size profiles for Ansell’s mole-rat (1/8) πŸ§ͺ

www.biorxiv.org/content/10.6...

14.02.2026 13:32 πŸ‘ 24 πŸ” 11 πŸ’¬ 2 πŸ“Œ 3

where we expect to find some signal. Stuff we have no reason to suspect does not get investigated at the same rate as stuff we have a reason to look into. Scientific activity is not memoryless or haphazard. We're not scrambling in absolute darkness; light of past evidence illuminates future steps.

13.02.2026 00:41 πŸ‘ 34 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

And of course, an ultimate mechanism is that scientists do not randomly select their hypotheses or results from an urn of unknowns. This is a strange, naive vision of science, very prevalent in metascience. Selection happens as a function of background knowledge in a domain. We look more closely

13.02.2026 00:41 πŸ‘ 62 πŸ” 13 πŸ’¬ 5 πŸ“Œ 1
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Yes, microplastics are bad for our health, but testing for them is not the answer.

Research shows up to 90% of people have them in their bloodstream. Don't pay thousands to test, take precautionary measures instead – more on that in Part 2.

#EatYourIceCream #Health #Wellness #Microplastics

11.02.2026 16:19 πŸ‘ 4 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0
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Release of microplastics from disposable cups in daily use - PubMed Global concern over microplastics (MPs) is increasing because of the potential threat these substances pose to ecosystem and human health. Disposable cups, frequently used as containers of beverages, are typically made of plastic or plastic-coated paper. The release of MPs from disposable cups durin …

Might I suggest a fourth for the to-go coffee and tea drinkers? BYO travel mug! All those paper cups are lined in plastic. Putting a hot (not to mention acidic) beverage into them is a microplastic soup recipe. Same goes for the fully plastic cups.

pubmed.ncbi.nlm.nih.gov/36089043/

13.02.2026 17:13 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Statistical Learning Theory in Lean 4: Empirical Processes from Scratch We present the first comprehensive Lean 4 formalization of statistical learning theory (SLT) grounded in empirical process theory. Our end-to-end formal infrastructure implement the missing contents i...

the first formalization of Dudley's entropy integral theorem for sub-Gaussian processes, and an application to least-squares (sparse) regression with a sharp rate.

Paper: arxiv.org/abs/2602.02285
Repo: github.com/YuanheZ/lean...

03.02.2026 23:45 πŸ‘ 1 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0