title: Editorial.
authors.affiliation: Institute for Brain Information Processing and Cognitive Neurodynamics, School of Information Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China, rbwang@ecust.edu.cn.
authors.forename: Rubin
authors.initials: R
authors.lastname: Wang
authors.forename: Fanji
authors.initials: F
authors.lastname: Gu