Inferability of Closed Set Systems from Positive Data. - Matthew de Brecht; Masanori Kobayashi; Hiroo Tokunaga; Akihiro Yamamoto (JSAI, 2006)

Computing Characteristic Sets of Bounded Unions of Polynomial Ideals. - Itsuo Takamatsu; Masanori Kobayashi; Hiroo Tokunaga; Akihiro Yamamoto (JSAI, 2007)

Learning Bounded Unions of Noetherian Closed Set Systems Via Characteristic Sets. - Yuichi Kameda; Hiroo Tokunaga; Akihiro Yamamoto (ICGI, 2008)

Inferability of Unbounded Unions of Certain Closed Set Systems. - Yuichi Kameda; Hiroo Tokunaga (JSAI-isAI Workshops, 2009)