Takashi Ishio received the Ph.D degree in information science and technology from Osaka University in 2006. He was a JSPS Research Fellow from 2006 to 2007. He was an assistant professor at Osaka University from 2007 to 2017. He was an associate professor of Nara Institute of Science and Technology from 2017 to 2023. He is now a professor of Future University Hakodate from 2023.