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LCS2 is research group led by Dr. Tanmoy Chakraborty at IIT Delhi. Research at LCS2 has been focusing on advancing LLMs grounded in real-world human behavior, with four tightly integrated directions: (i) efficient and controllable LLMs, including parameter-efficient fine-tuning, knowledge distillation, pruning, KV-cache compression, context compression, and long-context or multilingual reasoning; (ii) behavior-aware and human-centric modeling, where language technologies are combined with insights from psychology and social science to study misinformation, counter-speech, cultural literacy, and the cognitive dynamics of online discourse; (iii) interpretability and diagnostic analysis, where we understand emerging, multimodal and multilingual capabilities of LLMs, and (iv) AI for high-stakes social applications, particularly mental health, encompassing conversational agents, counseling summarization, multimodal risk detection, and privacy-preserving learning frameworks. Across these themes, the lab emphasizes principled evaluation — probing generalization, fidelity, reasoning, and alignment, while developing multimodal, multilingual, and personalization-aware systems that are both scalable and deployable in real-world settings.
Want to work with us?
🎟️ To apply for MSR / PhD position, click here.
🎟To apply for the Research Assistant (RA) / Post Doctoral position, drop a mail to chak.tanmoy.iit@gmail.com
News
June 29, 2026: Shashank Agarwal has got an internship at HPE Labs, India.
June 22, 2026: Congrats, Prof. Tanmoy Chakraborty, on your promotion to Full Professor! 🎉🎉🎉
June 21, 2026: Our paper on Multi-Expert Orchestration got accepted on TMLR.
June 20, 2026: Dr. Tanmoy Chakraborty received the Microsoft Faculty Award.
June 20, 2026: Ayan Sengupta has received the prestigious Microsoft PhD Fellowship.
May 12, 2026: Our paper on designing checklist for LLMs in Behavioral science, accepted in Nature Human Behavior.
May 1, 2026: Two papers on Concept Learning, Model Interpretability (ICML Spotlight: Top 2.2% papers), accepted in ICML'26.
April 7, 2026: Six papers (Interpretability, Personalization, Agentic SVLMs, Benchmarking), accepted in ACL'26.
February 8, 2026: Our paper on Mental Health Screening App got accepted on JMIR Formative Research!
January 28, 2026: Prof. Tanmoy Chakraborty received OpenAI Mental Health Grant Award. Congratulations!
January 27, 2026: Our paper on Memory for Personalized Summarization accepted in ICLR’26.
January 13, 2025: Three papers (taxonomy expansion, LLM personalization, mental health), accepted in The WebConf'26.
January 05, 2025: Shail Mishra has got an internship at Amazon India.
January 04, 2025: Two papers (long-context multilingual reasoning, spatial symbolic reasoning), accepted in EACL’26 (1 in Main, 1 in Findings)
December 16, 2025: Prof. Tanmoy Chakraborty received the NIVIDIA Academic Research Grant! Congratulations! 🎉
December 03, 2025: Prof. Tanmoy Chakraborty received the INSA Young Associates! Congratulations! 🎉
November 22, 2025: Our paper on scaling laws, accepted in TMLR.
November 08, 2025: Our paper on Taxonomy Expansion got accepted on AAAI'26.
November 05, 2025: Our EMNLP'25 paper on Multilingual Cultural Literacy of LLMs, received the SAC Highlights Award.
November 01, 2025: Aseem Srivastava received the research excellent award for his PhD thesis. Congratulations Aseem! 🎉🎉🎉
October 03, 2025: Our paper on data augmentation for personalized summarization, accepted in TMLR.
Featured Highlight
Parmanu builds efficient AI architectures and compression to make powerful language models practical, affordable, and deployable on everyday hardware.
Manashi builds human-centered AI for mental healthcare, combining clinical insight, multilingual NLP, and ethical, real-world deployment to support clinicians.
At TRUSTMAPS, we are building the national foundation to measure, evaluate, and ensure that AI systems used in Indian healthcare are trustworthy, fair, and secure.
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