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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 β 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?
ποΈ To apply for MSR / PhD position, click here.
πTo apply for the Research Assistant (RA) / Post Doctoral position, drop a mail to chak.tanmoy.iit@gmail.com
News
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 ICLRβ26.
January 13, 2026: Three papers (taxonomy expansion, LLM personalization, mental health), accepted in The WebConf'26.
January 04, 2026: Two papers (long-context multilingual reasoning, spatial symbolic reasoning), accepted in EACLβ26 (1 in Main, 1 in Findings)
December 16, 2025: Prof. Tanmoy Chakraborty received the NIVIDIA Academic Research Grant! Congratulations! π
December 03, 2025: Prof. Tanmoy Chakraborty received the INSA Young Associates! Congratulations! π
November 22, 2025: Our paper on scaling laws, accepted in TMLR.
November 8, 2025: Prof. Tanmoy Chakraborty Received the ACM India Outstanding Contribution to Computing Education (OCCE) 2025 Award.
November 08, 2025: Our paper on quantum-inspired taxonomy generation got accepted to 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! πππ
October 03, 2025: Our paper on data augmentation for personalized summarization, accepted in TMLR.
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