About Me

I am an assistant professor of computer science at Brown University, studying computer vision, machine learning, and artificial intelligence. I am also a staff research scientist at Google Research.

Previously, I received my Ph.D. from the University of Southern California in 2016, advised by Prof. Ram Nevatia. I completed my bachelor degree in Computer Science at Tsinghua University in 2011. I did research internships at Google and Facebook.

My ongoing research projects involve learning multimodal representation and visual commonsense from unlabeled videos, to recognize human activities, objects, and their interactions over time, and to transfer the representation to embodied agents. I believe multimodal learning is a pathway for computer vision to help language understanding, robotics, and cognitive science.

I am looking for highly motivated students to join my lab at Brown, please find information for prospective students. Together with my amazing colleagues, we are organizing the exploreCSR program.

Teaching

• CSCI 2952-N, Advanced Topics in Deep Learning, Spring 2022.
• ICASSP, Short course on Multimodal Transformers, May 2022.
• CSCI 1470 and 2470, Deep Learning, Fall 2021.
• CSCI 2950-K, Special Topics in Computational Linguistics, Fall 2020.

Group

PhD students

• Apoorv Khandelwal (Co-advised with Ellie Pavlick, Fall 2022)
• Calvin Luo
• Nate Gillman (Co-advised with Carsten Eickhoff)
• Shijie Wang
• Tian Yun (Co-advised with Ellie Pavlick, Fall 2022)
• Yuan Zang (Fall 2022)

Student researchers

• Usha Bhalla (class of 2022 at Brown, next stop: PhD student at Harvard)

Alumni

• Emily Byun (class of 2021 at Brown, now PhD student at CMU)
• Jake Sokol (class of 2021 at Brown, now at a startup)
• Michael Mao (class of 2021 at Brown, now software engineer at Microsoft)

Recent Projects

	Attention Bottlenecks for Multimodal Fusion Arsha Nagrani, Shan Yang, Anurag Arnab, Aren Jansen, Cordelia Schmid, and Chen Sun NeurIPS 2021 arXiv / Research Blog / Project / Code
	Episodic Transformer for Vision-and-Language Navigation Alexander Pashevich, Cordelia Schmid, and Chen Sun ICCV 2021 arXiv / Project / Code
	Learning Temporal Dynamics from Cycles in Narrated Video Dave Epstein, Jiajun Wu, Cordelia Schmid, and Chen Sun ICCV 2021 arXiv / Research Blog / Project
	Composable Augmentation Encoding for Video Representation Learning Chen Sun, Arsha Nagrani, Yonglong Tian, and Cordelia Schmid ICCV 2021 arXiv / Project / Code
	What Makes for Good Views for Contrastive Learning? Yonglong Tian, Chen Sun, Ben Poole, Dilip Krishnan, Cordelia Schmid, and Phillip Isola NeurIPS 2020 arXiv / Research Blog / Project / Code
	VideoBERT: A Joint Model for Video and Language Representation Learning Chen Sun, Austin Myers, Carl Vondrick, Kevin Murphy, and Cordelia Schmid ICCV 2019 arXiv / Research Blog / VentureBeat
	VectorNet: Encoding HD Maps and Agent Dynamics from Vectorized Representation Jiyang Gao*, Chen Sun*, Hang Zhao, Yi Shen, Dragomir Anguelov, Congcong Li, and Cordelia Schmid CVPR 2020 arXiv / Waymo Blog / VentureBeat

Services

• Area Chair, CVPR 2020, 2021, and 2022.
• Area Chair, ECCV 2022.
• Senior PC, AAAI 2021, and 2022.
• Area Chair, WACV 2017, and 2018.