Experience
Education
Bio
Employment
April 2000 - March 2003 Research Fellow of the Japan Society for the Promotion of Science
April 2001 - August 2002 Visiting Scholar of Vanderbilt University
September 2002 - July 2003 Post Doctor Fellow. Adviser: Professor P. Seymour.
August 2003 - March 2006 Assistant Professor of Tohoku University.
April 2006 – Oct. 2009 Associate Professor of National Institute of Informatics (NII)
Nov. 2009 – present. Professor of National Institute of Informatics (NII)

Research Interests:
Discrete Math and Theoretical Computer Science, AI, Graph Mining, Graph Data Base.