Dr. Liu Peng is senior director and chief architect of business products at Qihoo 360. He is also responsible for product and engineering for monetization of 360. After receiving his PhD from Tsinghua University in 2005, he joined Microsoft Research Asia and studied cutting-edge artificial intelligence technologies. In 2009, he participated in the founding of Yahoo! Labs Beijing as a senior scientist. He was also chief scientist of MediaV. Dr. Liu Peng is devoted to products and technologies related to big data and computational advertising. His public online course “computational advertising” has attracted more than 30,000 students on Netease.com, and has been adopted as a basic training material in many related companies. Moreover, this course has been selected by Peking University, Tsinghua University and Beihang University for their graduates. Wang Chao received his master’s degree from Peking University, and then worked at Weibo and Autohome’s advertising department for some years. He is now a tech leader in the query recommendation group at Baidu’s portal search department. His work focuses on machine learning algorithms in computational advertising, and he has won 7th place among 718 participants in “predict click-through rates on display ads” organized by Kaggle and Criteo. He is also interested in contributing code for open source machine learning tools such as xgboost.