OISHI Koji

Research Fellow
Research field / main research area
International Relations, Conflict Studies, Network Science, Complex Systems
Related research projects
OISHI Koji
Research field / main research area
International Relations, Conflict Studies, Network Science, Complex Systems
Related research projects

Educational Background

・Ph.D. in Applied Physics, University of Tokyo — May 2017
・Master of Engineering, Applied Physics, University of Tokyo — March 2012
・Bachelor of Engineering, Applied Physics, University of Tokyo — March 2010

Career Background

・Visiting Research Fellow, Department of Political Science, Indiana University, Bloomington, February 2023 – August 2025
・Research Fellow, Department of International Politics, Aoyama Gakuin University, Tokyo, Japan, April 2020 – February 2023
・Research Fellow, Global Research Center for Big Data Mathematics, National Institute of Informatics, Tokyo, Japan, June 2017 – March 2020

Major Publications

[1] K. Oishi and K. Sakuwa. “Structural balance of alliance and rivalry networks in international relations.” Artificial Life and Robotics 30, 303-309 (2025).

[2] K. Oishi, H. Ito, Y. Murase, H. Takikawa, and T. Sakamoto. “Evolution of global development cooperation: An analysis of aid flows with hierarchical stochastic blockmodels.” PLoS ONE 17, e0272440 (2022)

[3] K. Oishi, T. Shimada, S. Miyano, and K. Kaski. “Balanced-imbalanced transitions in indirect reciprocity dynamics on networks.” Phys. Rev. E 104, 024310 (2021).

Affiliations

Japan Association for African Studies
Japan Association for International Relations