The Operations Research Society of Japan (ORSJ)


The Operations Research Society of Japan (ORSJ) was established on June 15, 1957.

After its foundation in 1957, ORSJ immediately joined IFORS in 1960. The first IFORS President from Asia, Takehiko (Bill) Matsuda of ORSJ, took office in 1973. ORSJ organized the seventh IFORS Triennial conference in Tokyo and Kyoto in 1975, the International Symposium on Mathematical Programming in 1988, and the 1994 Association of Asian-Pacific Operational Research Societies (APORS) conference in Fukuoka.


In addition to such pursuits as research on OR theory and the development of methodologies, the ORSJ explores the practical use of methods applicable to specific problems occurring in the world of business and government offices. It also actively promotes exchanges of information among its members as well as interaction on an international level.


Headquartered in Tokyo, the society also has six chapters around the country (one each in Hokkaido and the Chubu, Chugoku-Shikoku, Kansai, Kyushu, and Tohoku regions). Each regional chapter conducts its own slate of activities, including lectures and research projects.


Specific activities are as follows:

  • Lectures and research presentation forums
  • Publication of such printed materials as its journal for members, a professional journal, and research reports
  • Liaison and cooperation with similar societies in Japan and overseas
  • Research and inquiries
  • Research promotion and recognition of research accomplishments


The ORSJ holds forums every spring and fall to present the results of research. The spring session is in Tokyo, while the fall event is held elsewhere in Japan


Communications of Operations Research of Japan, the journal for ORSJ members, is published periodically in Japanese. Each issue has a special feature section consisting of clear, readily understandable explanations about OR theory and applications pertaining to a particular subject.

The journal's contents also include articles written by leaders in this field, regular columns on selected topics, case studies, and updates on ORSJ activities. "Journal of the Operations Research Society of Japan" is a professional journal issued four times a year. From 2010, JORSJ are freely accessible at ORSJ webpage: http://www.orsj.or.jp/~archive/