1. College of Computer Science and Technology, Zhejiang University, Hangzhou, China
2. Research Center for Intelligent Computing Hardware, Zhejiang Lab, Hangzhou, China
3. School of Integrated Circuits, Peking University, Beijing, China
4. College of Computer Science and Technology, Zhejiang University of Technology, Hangzhou, China
5. College of Computer Science and Technology and the State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou, China