Hiroaki Ohshima received the BS and MS degrees in Engineering from Kobe University, in 2000 and 2003, respectively. In 2006, he received the Ph.D. degree in Informatics from Kyoto University. He worked for the Department of Social Informatics, Graduate School of Informatics, Kyoto University from 2006 to 2017, as an associate professor and a programspecific associate professor. He joined University of Hyogo in 2017, and he currently works as an associate professor in Graduate School of Information Science, University of Hyogo. His research interests include information retrieval, Web search and mining, and information design. He is a member of the ACM, the Information Processing Society of Japan (IPSJ), and the Database Society of Japan (DBSJ).