1. College of Computer Science and Technology, China University of Petroleum (East China),Qingdao,China,266580
2. Shandong Provincial University Laboratory for Protected Horticulture, Weifang University of Science and Technology,Shouguang,China,262700
3. School of Mechanical, Electrical and Information Engineering, Shandong University,Weihai,China,264209
4. University of Jinan,Shandong Provincial Key Laboratory of Network Based Intelligent Computing,Jinan,China,250022
5. School of Modern Posts, Nanjing University of Posts and Telecommunications,Nanjing,China,210023