- Akito Sakurai, Kôiti Hasida, Katsumi Nitta, editors, New Frontiers in Artificial Intelligence - JSAI 2003 and JSAI 2004 Conferences and Workshops, Niigata, Japan, June 23-27, 2003 and Kanazawa, Japan, May 31 - June 4, 2004, Revised Selected Papers. Volume 3609 of Lecture Notes in Computer Science, Springer, 2007.
- Takashi Washio, Ken Satoh, Hideaki Takeda, Akihiro Inokuchi, editors, New Frontiers in Artificial Intelligence, JSAI 2006 Conference and Workshops, Tokyo, Japan, June 5-9 2006, Revised Selected Papers. Volume 4384 of Lecture Notes in Computer Science, Springer, 2007.