Tanmoy Chakraborty

🌟 𝐀 𝐍𝐞𝐰 T𝐞𝐱𝐭𝐛𝐨𝐨𝐤 -- 𝐈𝐧𝐭𝐫𝐨𝐝𝐮𝐜𝐭𝐢𝐨𝐧 𝐭𝐨 𝐋𝐚𝐫𝐠𝐞 𝐋𝐚𝐧𝐠𝐮𝐚𝐠𝐞 𝐌𝐨𝐝𝐞𝐥𝐬 🌟 I am excited to share the release of my new textbook, 𝘐𝘯𝘵𝘳𝘰𝘥𝘶𝘤𝘵𝘪𝘰𝘯 𝘵𝘰 𝘓𝘢𝘳𝘨𝘦 𝘓𝘢𝘯𝘨𝘶𝘢𝘨𝘦 𝘔𝘰𝘥𝘦𝘭𝘴 (#LLMs) -- Perhaps the first textbook on LLMs. Target Audience: 👉 Students/beginners, Looking for a structured starting point to learn LLMs 👉 Teachers, planning to offer a course on LLMs 👉 Industry professional, seeking to deepen their understanding of LLMs Explore the Book: 🔗 Book Website: tanmoychak.com/llmbook/ 📑 Table of Contents: tanmoychak.com/llmbook/toc.pdf 🛒 Available on Amazon: amazon.in/dp/936386474X/ Enhance Your Learning Experience: 👉 Slides & Lecture Videos: Chapter-wise resources -- lcs2-iitd.github.io/ELL881-AIL821-… 👉 Exercises & Solutions: Practice with detailed chapter exercises (solutions available on request). 👉 Upcoming @nptel_official Course: Starting January 2025! Preview here: onlinecourses.nptel.ac.in/noc25_cs45/pre… Book Endorsement: 📖 Foreword by Prof. Tim Baldwin @eltimster 👏 Endorsements from Prof. Iryna Gurevych @IGurevych and Prof. Pushpak Bhattacharyya #LLMs #Textbook @iitdelhi @WileyIndiaPL @lcs2lab

2/ The organising committee for CAISc 2026 is led by @paraschopra, @dhruvtrehan9, and @gargdhruv36. We are glad to have @Tanmoy_Chak (IIT Delhi), Palash Goyal (Google Research), Dr Mohan Kankanhalli (NUS AI Institute), Shirish Karande (TCS Research) on our steering committee, and @murari_ai and Pratik Narang as our Program Committee Chairs. Additionally, our program committee for final human review spans CS, Mathematics, electrical engineering, and not just ML.

@flyspicejet @flyspicejet I received the refund today. Thank you very much.

@Tanmoy_Chak We sincerely regret any inconvenience caused, Tanmoy. We are in receipt of your email, and have updated our team to check and revert soon.

@flyspicejet Refund of ~₹1.97L for a failed booking on 6 Mar is still pending despite multiple follow-ups (even after the promised 5 working days). Case no: 10509519. No response to email and unsatisfactory customer support. If the refund is not processed immediately, I will be forced to escalate this to consumer protection authorities and financial regulators. Please don't expect people to have infinite bandwidth to follow up regularly.

@flyspicejet our flight from FJR to Delhi got cancelled again today -- SJ9085 at 1305. No rescheduled notification. This is the second time we booked tickets. My 4.5L of ticket fees is on hold. I am accompanied by my 3 yrs old son and wife. Pls reschedule the flight asap. We are not in a position to book other flight due to financial constraints. Pls understand the situation.

@Tanmoy_Chak Hi Tanmoy, we have responded to you via DM.

@flyspicejet We booked tickets from Fujairah to Delhi for 7th Mar at 13:05. The payment was successful. But we did not receive tickets. Please check asap.

@flyspicejet Alright. Please consider this very urgent. I will not book tickets further until you message me. @flyspicejet

@Tanmoy_Chak We shall reply to your DM shortly.

@flyspicejet @flyspicejet pls reply asap to my DM. We are waiting. Either you send us the tickets or cancel the transaction and initiate a refund so that we can book it again.

@Tanmoy_Chak Hi Tanmoy, we have responded to you via DM.

Our new study on interpretability explains -- 𝐭𝐡𝐞 𝐏𝐡𝐲𝐬𝐢𝐜𝐬 𝐨𝐟 𝐊𝐕 𝐂𝐚𝐜𝐡𝐞 𝐂𝐨𝐦𝐩𝐫𝐞𝐬𝐬𝐢𝐨𝐧 𝐟𝐨𝐫 𝐋𝐋𝐌𝐬 Pre-print: arxiv.org/abs/2603.01426 As context lengths continue to grow, the KV cache has become the primary memory bottleneck during inference. While many compression techniques report impressive memory savings with minimal drops in benchmark accuracy, we asked a more structural question: 👉 𝘞𝘩𝘢𝘵 𝘢𝘤𝘵𝘶𝘢𝘭𝘭𝘺 𝘩𝘢𝘱𝘱𝘦𝘯𝘴 𝘵𝘰 𝘢𝘵𝘵𝘦𝘯𝘵𝘪𝘰𝘯 𝘢𝘯𝘥 𝘳𝘦𝘢𝘴𝘰𝘯𝘪𝘯𝘨 𝘸𝘩𝘦𝘯 𝘸𝘦 𝘤𝘰𝘮𝘱𝘳𝘦𝘴𝘴 𝘵𝘩𝘦 𝘒𝘝 𝘤𝘢𝘤𝘩𝘦? We frame KV compression as a 𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐝 𝐩𝐞𝐫𝐭𝐮𝐫𝐛𝐚𝐭𝐢𝐨𝐧 𝐨𝐟 𝐭𝐨𝐤𝐞𝐧-𝐥𝐞𝐯𝐞𝐥 𝐫𝐨𝐮𝐭𝐢𝐧𝐠 𝐢𝐧 𝐬𝐞𝐥𝐟-𝐚𝐭𝐭𝐞𝐧𝐭𝐢𝐨𝐧. Rather than evaluating only final task accuracy, we design synthetic datasets to probe: (1) Multi-entity tracking, (2) Coreference resolution, and (3) Multi-hop reasoning. This setup allows us to disentangle three critical dimensions: Information Retention, Accessibility, and Utilisation. Our findings reveal an interesting pattern: 👉 𝐌𝐨𝐝𝐞𝐫𝐚𝐭𝐞 𝐜𝐨𝐦𝐩𝐫𝐞𝐬𝐬𝐢𝐨𝐧 often preserves surface-level accuracy despite substantial internal representational degradation — suggesting significant redundancy in current models. 👉 𝐍𝐞𝐚𝐫 𝐞𝐱𝐭𝐫𝐞𝐦𝐞 𝐜𝐨𝐦𝐩𝐫𝐞𝐬𝐬𝐢𝐨𝐧, we observe a sharp "safety cliff" in hallucinations, driven by global erasure of answer-critical tokens. 👉 We also uncover a second failure mode -- 𝐫𝐞𝐩𝐫𝐞𝐬𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐫𝐢𝐠𝐢𝐝𝐢𝐭𝐲 -- where tokens remain present, but routing flexibility collapses. These results suggest that evaluating compression solely through downstream accuracy can mask stronger structural effects on reasoning. Understanding these internal dynamics is crucial as we move toward longer-context and more memory-efficient LLMs. Brilliant work by Ayan Sengupta and Samhruth Ananthanarayanan. #ScienceofLLMs #Interpretability #KVCache #ModelCompression

📢 New Media Feature 📢 We are pleased to share that Prof. Tanmoy Chakraborty @Tanmoy_Chak was recently invited to Insight, a program on @sansad_tv, to speak on the growing challenges posed by #AIGenerated synthetic content. #ResponsibleAI #PublicPolicy youtu.be/sxaLdmlVRtY?si…

On the eve of the India AI Impact Summit, I have recently joined a podcast on AI's impact and the road ahead. youtube.com/watch?v=t32cHA…

@josephimperial_ Pls send me an email. I will check

Excited to share that my paper was desk rejected for referencing a table in the appendix #ACL2026

🎉 New Paper Alert 🎉 We're excited to share that our paper "Here for You: A Co-Designed Mental Health Screening App for Indian University Students " has been accepted for publication in #JMIR #FormativeResearch! 🌟 @Tanmoy_Chak preprints.jmir.org/preprint/75616…

Happy to announce that our paper has been accepted to #ICLR2026! 🎉 📜 Beyond Markovian Drifts: Action-Biased Geometric Walks with Memory for Personalized Summarization 👥 Parthiv Chatterjee, Asish Batha, Tashvi Patel, @sourish_rygbee, @Tanmoy_Chak Congratulations to all authors!

@Aryan_Mangla_ @iclr_conf @sourish_rygbee @lcs2lab @iitdelhi Rio was my first international trip from India, way back in 2012. A beautiful place to visit. But farthest from India. I avoid such a long trip

@Tanmoy_Chak @iclr_conf @sourish_rygbee @lcs2lab @iitdelhi why not going to Rio?

Amidst the #ICLR26 chaos, at least one ray of hope finally materialised. No. I am not coming to Rio 🙃 @iclr_conf @sourish_rygbee @lcs2lab @iitdelhi

@DrDatta_AIIMS Always yes. PhD is not about research, but also a life experience -- dedication, perseverance, tolerance, hard work, persistence and many more.

Unpopular opinion: Yes. Especially in Physical AI!

@DrDatta_AIIMS @mnwsth Not in the era of ChatGPT 😉

@Tanmoy_Chak @mnwsth Bookmarking this tweet, when either of you get, will RT

@mnwsth, you have not received any Padma award this time either. very sad 😀

@mnwsth Why do you want to demote yourself?

Alright, who wants to nominate me for a NASI fellowship?

I'm increasingly convinced that the latest version of #Gemini is much better than the latest #ChatGPT -- both for research and day-to-day queries -- and the trend is expected to continue. An overemphasis on periodic model releases may erode OpenAI's first-mover advantage. Well done, #TeamGoogle 👏 @OpenAI @GeminiApp @sundarpichai @JeffDean @ManishGuptaMG1 @ChatGPTapp