I am a staff research scientist at Google, working closely with Cordelia Schmid and Kevin Murphy. I received my Ph.D. from University of Southern California in 2015, advised by Prof. Ram Nevatia. During graduate school, I was lucky enough to work with Sanketh Shetty and Rahul Sukthankar at Google Research; Lubomir Bourdev, Ronan Collobert and Manohar Paluri at Facebook AI Research.

    Research Highlights
    My current research interests include human action recognition and dynamics prediction from videos. I used to work on object detection and webly-supervised learning. Together with my amazing colleagues, I won the COCO object detection challenge 2016 and iNaturalist challenge 2017. Our object detection algorithms have been open sourced as the Tensorflow Object Detection API. To facilate research on machine perception, I also work on dataset collection, notably the Atomic Visual Actions dataset for human action recognition, the Open Images dataset for object detection and the iNaturalist dataset for fine-grained recognition.