I am a research scientist at FAIR, Meta. I graduated with a PhD in Computer Science from UT Austin, advised by Dr. Kristen Grauman. My PhD research was at the intersection of video understanding and embodied AI.

Before coming to UT, I was an intern at MALL Lab, IISc, working with Dr. Partha Talukdar. I completed my B.E. in Computer Science from BITS Goa.

Contact: tushar.nagarajan@utexas.edu | tusharn@meta.com
CV: Link

News & Activities


  • Nov 23: Ego-Exo4D has been announced! [arxiv] [blog] [website].
  • Sep 23: Two papers accepted at NeurIPS 23 (Datasets and benchmarks): Ego4D-GoalStep and HT-Step.
  • Sep 23: Two papers accepted at NeurIPS 23: EgoDistill and EgoEnv.
  • Nov 22: I graduated! Next stop: Meta AI Research in NY. [thesis] [slides]
  • Mar 22: Ego4D has been accepted at CVPR 2022. [paper] [project]
  • Jan 22: Our work on Environment predictive coding is accepted at ICLR 2022. [paper] [project]
  • Oct 21: Our work on learning human activity priors for embodied AI is accepted at NeurIPS 2021. [paper]
  • Mar 21: Our work on bridging the egocentric <–> third-person gap in video is accepted at CVPR 2021. [paper]
  • Jan 21: Our work on Differentiable constraints for causal structure discovery is accepted at AISTATS 2021. [paper]
  • Sep 20: Our work on Exploration for Interaction is accepted at NeurIPS 2020. [paper] [project].
  • Jul 20: Invited talk at Stanford: “Environment-centric reasoning for embodied perception” [slides]. Thanks Juan Carlos Niebles for the invitation!
  • Mar 20: Our work on Topological environment graphs is accepted at CVPR 2020. [paper] [project]
  • Jul 19: Our work on Interaction Hotspots is accepted at ICCV 2019. [paper] [project]
  • Jun 19: Presented our work on Interaction Hotspots at the EPIC workshop at CVPR. EPIC@CVPR19
  • Jul 18: Our work on Attributes as Operators is accepted at ECCV 2018. [paper] [code]
  • May 18: Interning at Facebook AI Research this summer
  • Mar 18: Our work on Dynamic Inference Paths in ResNets is accepted at CVPR 2018. [paper] [code]
  • Dec 17: Our work on Computational Antimicrobial Peptide Design is accepted at JBC 2017. [paper] [code]
  • Aug 17: Completed a wonderful internship at IBM Research. Thanks Bhatta and Rogerio!
  • Jul 17: Sharmistha presents our work on Coupling Constraints for Relation Extraction at ACL 2017 (https://arxiv.org/abs/1710.09942)
  • May 17: Started an internship at IBM Research’s Vision & Multimedia group, working with Bishwaranjan Bhattacharjee and Dr. Rogerio Feris
  • Jan 17: Joined Dr. Kristen Grauman’s vision group as a Research Assistant.
  • Aug 16: Joined UT Austin as a graduate student.
  • July 16: Completed a wonderful internship at MALL Lab, thanks Partha!

Publications


Ego-Exo4D: Understanding Skilled Human Activity from First-and Third-Person Perspectives
Kristen Grauman, Andrew Westbury, Lorenzo Torresani, Kris Kitani, Jitendra Malik, Tushar Nagarajan* et al.
ArXiv 23
[arxiv] [project]
AnyMAL: An Efficient and Scalable Any-Modality Augmented Language Model
Seungwhan Moon*, Andrea Madotto*, Zhaojiang Lin*, Tushar Nagarajan*, Matt Smith, Shashank Jain, Chun-Fu Yeh, Prakash Murugesan, Peyman Heidari, Yue Liu, Kavya Srinet, Babak Damavandi, Anuj Kumar
ArXiv 23 (* equal contribution)
[arxiv]
HT-Step: Aligning Instructional Articles with How-To Videos
Triantafyllos Afouras, Effrosyni Mavroudi, Tushar Nagarajan, Huiyu Wang, Lorenzo Torresani
NeurIPS 23
[paper]
Ego4D Goal-Step: Toward Hierarchical Understanding of Procedural Activities
Yale Song, Gene Byrne, Tushar Nagarajan, Huiyu Wang, Miguel Martin, Lorenzo Torresani
NeurIPS 23
[paper] [code]
EgoDistill: Egocentric Head Motion Distillation for Efficient Video Understanding
Shuhan Tan, Tushar Nagarajan, Kristen Grauman
NeurIPS 23
[paper] [project]
EgoEnv: Human-centric environment representations from egocentric video
Tushar Nagarajan, Santhosh K. Ramakrishnan, Ruta Desai, James Hillis, Kristen Grauman
NeurIPS 23 (Oral)
[paper] [project]
Ego4d: Around the world in 3,000 hours of egocentric video
Kristen Grauman, Andrew Westbury, Tushar Nagarajan* , … Jitendra Malik
CVPR 2022 (Oral)
TPAMI 2023. Invited article: Best Papers of CVPR
[paper] [project]
Environment Predictive Coding for Visual Navigation
Santhosh K. Ramakrishnan, Tushar Nagarajan, Ziad Al-Halah, Kristen Grauman
ICLR 2022
[paper] [project]
Shaping embodied agent behavior with activity-context priors from egocentric video
Tushar Nagarajan, Kristen Grauman
NeurIPS 2021 (Spotlight)
[paper] [project] [talk]
Ego-Exo: Transferring Visual Representations from Third-person to First-person Videos
Yanghao Li, Tushar Nagarajan, Bo Xiong, Kristen Grauman
CVPR 2021
[paper] [code]
Differentiable Causal Discovery Under Unmeasured Confounding
Rohit Bhattacharya, Tushar Nagarajan, Daniel Malinsky, Ilya Shpitser
AISTATS 2020
[paper] [code]
Learning Affordance Landscapes for Interaction Exploration in 3D Environments
Tushar Nagarajan, Kristen Grauman
NeurIPS 2020 (Spotlight)
[paper] [project] [talk] [code]
Ego-Topo: Environment Affordances from Egocentric Video
Tushar Nagarajan, Yanghao Li, Christoph Feichtenhofer, Kristen Grauman
CVPR 2020 (Oral)
[paper] [project] [talk] [code]
Grounded Human-Object Interaction Hotspots from Video
Tushar Nagarajan, Christoph Feichtenhofer, Kristen Grauman
ICCV 2019
[paper] [project] [code]
Attributes as Operators
Tushar Nagarajan, Kristen Grauman
ECCV 2018
[paper] [code]
BlockDrop: Dynamic Inference Paths in Residual Networks
Zuxuan Wu*, Tushar Nagarajan*, Abhishek Kumar, Steven Rennie, Larry S. Davis, Kristen Grauman, Rogerio Feris
CVPR 2018 (Spotlight) (* equal contribution)
[paper] [code] [talk]
CANDiS: Coupled & Attention-Driven Neural Distant Supervision
Tushar Nagarajan, Sharmistha Jat, Partha Talukdar
ACL (Workshop) 2017
[paper]
Computational antimicrobial peptide design and evaluation against multidrug-resistant clinical isolates of bacteria
Deepesh Nagarajan, Tushar Nagarajan, Natasha Roy, Omkar Kulkarni, Sathyabaarathi Ravichandran, Madhulika Mishra, Dipshikha Chakravortty and Nagasuma Chandra
Journal of Biological Chemistry (JBC), 2017.
[paper] [code]