Zan Zhang received his PhD degree in computer science from the Hefei University of Technology, Hefei, China, in 2018. He is an Associate Professor of computer science and technology at Key Laboratory of Knowledge Engineering with Big Data (Hefei University of Technology), Ministry of Education, China, and School of Computer Science and Information Engineering, Hefei University of Technology, Hefei, China. His research interests include data mining, machine learning and causal inference.