A Simple, Fast, and Safe Mediator for Congestion Management. - Kei Ikegami; Kyohei Okumura; Takumi Yoshikawa (AAAI, 2020)

Regulating Matching Markets with Constraints: Data-driven Taxation. - Akira Matsushita; Kei Ikegami; Kyohei Okumura; Yoji Tomita; Atsushi Iwasaki (CoRR, 2022)

Evaluating the Efficiency of Regulation in Matching Markets with Distributional Disparities. - Kei Ikegami; Atsushi Iwasaki; Akira Matsushita; Kyohei Okumura (EC, 2025)