1. School of Data Science and Information Engineering, Guizhou Minzu University, Guiyang 550025, Guizhou China
2. Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW 2007, Australia
3. The School of Automation, Central South University, Changsha 410 083, China
4. School of Automation Science and Engineering, South China University of Technology, Guangzhou 510640, Guangdong China