I was a Staff Research Scientist in Facebook AI. My research interests include natural language processing, machine learning and optimization. I used to be a graduate student (PhD) in the Department of Electrical and Computer Engineering, the Ohio State University, advised by Prof. Ness Shroff from 2015 September to 2019 April. Before that, I spent two wonderful years in Shanghai Jiaotong University under the supervision of Prof. Hui Liu and Prof. Xinbing Wang from 2013 to 2015. I am interested in solving the challenging problems via non-trivial theoretical developments. I received the Kenneth C. Sevcik Outstanding Paper Award at ACM SIGMETRICS 2017, and the best paper award at IEEE ICNC 2015.