The Department of Information Science started in 1975 as an augmented successor to the Information Science Laboratory, and has since offered undergraduate and graduate degree programs. In 2001, the graduate program was renamed the Department of Computer Science and became part of the Graduate School of Information Science and Technology (IST). In 2010, the IST launched the English program, allowing graduate students to complete the entire degree in English.
(The Japanese version of this website has more information.)