Hi, I am a Ph.D. student of Computer Science at UCLA, advised by Cho-Jui Hsieh . Prior to coming to UCLA, I was a Ph.D. student in UC Davis during 2015-2018. I received my bachelor degree in Computer Science from University of Electronic Science and Technology of China, advised by Yu Xiang. My research interests includes large-scale optimization, distributed and parallel machine learning, recommender system and robustness of machine learning models. You could reach me at mhcheng@ucla.edu.