I am a research scientist on the Facebook ads ranking team. My work experience spans across from large firms to start-ups. I was with Skytree, a machine learning start-up, conducting machine learning algorithm R&D and applications in a variety of verticals. Before that, I was with IBM Global Business Services and Siemens Research. I earned my PhD in computer science at Temple University, Philadelphia in 2010 and my BA in electronic commerce at Wuhan University in China in 2006.