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Arnab Sen Sharma

@arnabsensharma.bsky.social

39 followers 51 following 15 posts

PhD Student at Northeastern, working to make LLMs interpretable

Posts Replies Media

Reposted by Arnab Sen Sharma

Can @canrager.bsky.social · 13/11/2025

Humans and LLMs think fast and slow. Do SAEs recover slow concepts in LLMs? Not really. Our Temporal Feature Analyzer discovers contextual features in LLMs, that detect event boundaries, parse complex grammar, and represent ICL patterns.

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Arnab Sen Sharma @arnabsensharma.bsky.social · 04/11/2025

How can a language model find the veggies in a menu? New pre-print where we investigate the internal mechanisms of LLMs when filtering on a list of options. Spoiler: turns out LLMs use strategies surprisingly similar to functional programming (think "filter" from python)! 🧵

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Reposted by Arnab Sen Sharma

nikhil07prakash.bsky.social @nikhil07prakash.bsky.social · 24/06/2025

How do language models track mental states of each character in a story, often referred to as Theory of Mind? We reverse-engineered how LLaMA-3-70B-Instruct handles a belief-tracking task and found something surprising: it uses mechanisms strikingly similar to pointer variables in C programming!

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Reposted by Arnab Sen Sharma

NDIF Team @ndif-team.bsky.social · 10/12/2024

More big news! Applications are open for the NDIF Summer Engineering Fellowship—an opportunity to work on cutting-edge AI research infrastructure this summer in Boston! 🚀

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