1. School of Computer Science, in the Faculty of Engineering, the University of Sydney, 6 Cleveland St, Darlington, NSW, Australia
2. JD Explore Academy, China
3. School of Computer Science, the National Engineering Research Center for Multimedia Software, the Institute of Artificial Intelligence, and the Hubei Key Laboratory of Multimedia and Network Communication Engineering, Wuhan University, Wuhan, China
4. University of Liverpool, the United Kingdom