1. School of Data Science, University of Science and Technology of China, Hefei, China
2. Anhui Province Key Laboratory of Big Data Analysis and Application, School of Computer Science and Technology, University of Science and Technology of China, Hefei, China
3. Eller College of Management, University of Arizona, Tucson, AZ, USA
4. Huawei Noah's Ark Lab, Shenzhen, China
5. JD Explore Academy in JD.com, Beijing, China