About me

I am a Research Scientist at PRIOR, the Computer Vision team at the Allen Institute for Artificial Intelligence.

I received my PhD in Computer Science from the University of Illinois Urbana-Champaign where I was advised by Prof. Derek Hoiem and closely collaborate with Prof. Alex Schwing.

Before that, I was an Electrical Engineering undergrad at IIT Kanpur where I began my computer vision and machine learning journey with Prof. Aditya K. Jagannatham.

What’s new?

June 2020Work on contrastive learning for weakly supervised phrase grounding done in collaboration with NVIDIA is available now:
- Paper: arXiv
- Supplementary Material: Randomly sampled results
April 2020 Defended my Doctoral Dissertation.
- Thesis: Representations from Vision and Language
- Defense Talk: Slides
Sept 2019 Many thanks to Prof. Ranjitha Kumar for guest lecture invitation to CS 598RK: HCI for ML (Fall 2019). Lecture material in the Teaching section below.
Sept 2019 Code and data out for both papers accepted to ICCV 2019 @ Seoul, Korea:
- ViCo: Word Embeddings from Visual Co-occurrences
- No-Frills Human-Object Interaction Detection

Research Interests

Computer VisionNatural Language Processing
Representation Learning
Task-Supervised / Self-Supervised
Transfer Learning
Multi-task Learning / Domain Adaptation
Multimodal Learning
Image-Text Retrieval / Visual Grounding
Object / Attribute DetectionWord / Phrase Embeddings
Visual Relationship DetectionLanguage Models

Complete List of Publications:


Ph.D. (CS)B. Tech. (EE)

Research Internships

Santa Clara | 2019Seattle | 2017
Palo Alto | 2015Ithaca | 2013


Professional services

  • Served as a reviewer for TPAMI, CVPR, ICCV, ECCV, and NeurIPS since 2016