The below information is as of September 30, 2018. It may differ from the current information.



Consulting Fellow (until September 30, 2018)

Professor, Faculty of Engineering, The University of Tokyo

Activities at RIETI


Regional Economics, Regional Cluster, Innovation Policy, Tax System


2003 Doctor of Engineering, The University of Tokyo
1997 M.A. in International Economics and Finance, Brandeis University
1989 B.A. in Economics, The University of Tokyo


2008 - present Professor, The University of Tokyo
2006 - 2008 Special Assistant to Director General, Economic and Industrial Policy Bureau, METI
2005 - 2006 Deputy Director, Economic and Industrial Policy Division, Economic and Industrial Policy Bureau, METI
2004 - 2005 Deputy Director, Budget and Accounts Division, METI
Visiting Associate Professor, Kyushu University
Visiting Lecturer, Faculty of Engineering, The University of Tokyo
2003 Visiting Assistant Professor, School of Economics, Kyushu University
2002 - 2004 Deputy Director, Corporate Affairs Division, METI
2001 - 2002 Team Leader, Regional Economic Research, METI
1989 Staff Economist, International Trade Research Office, METI

Selected Publications and Papers

V. Ittipanuvat, K. Fujita, I. Sakata and Y. Kajikawa, "Finding linkage between technology and social issue: A literature based discovery approach," Journal of Engineering and Technology Management, accepted

I. Sakata and H. Sasaki, "Scientific catch-up in Asian countries: a case for solar cell," Natural Resources 4 (2013) 134-141

I. Sakata, H. Sasaki, H. Nakamura and Y. Kajikawa, "Maps of international research collaboration in clean energy," Journal of Energy and Power Engineering 7 (2013) 480-490

I. Sakata, et al. "Bibliometric analysis of service innovation research: identifying knowledge domain and global network of knowledge," Technological Forecasting and Social Change 80 (2013) 1085-1093

J. Mori, Y. Kajikawa, H. Kashima and I. Sakata, "Machine learning approach for finding business partners and building reciprocal relationships," Expert Systems with Applications 39 (2012) 10402-10407

I. Sakata, H. Sasaki and Y. Kajikawa, "Indentifying knowledge structure of patent and innovation research," Journal of Intellectual Property Association of Japan 8 (2) (2012) 56-67

N. Shibata, Y. Kajikawa and I. Sakata, "Link prediction in citation networks," Journal of the American Society for Information Science and Technology 63 (2012) 78-85