Dr. Erheng Zhong is a research scientist in Facebook. Before joining Facebook, he worked as a research scientist in Baidu Research and a research scientist in Yahoo! Labs. He received his PhD degree from Hong Kong University of Science and Technology in 2014, under the supervision of Prof. Qiang Yang and Dr. Wei Fan. He obtained his BSc degree and MSc degree from Sun Yat-Sen University, China, in 2008 and 2010, respectively. He was an intern in the data mining group, Tencent. His research interests include Question-Answering Systems (Chatbot), Recommendation Systems, Transfer Learning, Social Network Analysis and Large-Scale Data Mining.