| 2026 | AAAI | Strategic Tool Enhanced AI Agent for Multi-Issue Negotiation (Student Abstract). | Daiki Kitashima, Ryota Higa, Katsuhide Fujita |
| 2026 | AAAI | Feasibility-Aware Masked Transformer for the Pickup-and-Delivery Problem with Time Windows (Student Abstract). | Kaede Saito, Ryota Higa, Hiromu Imura, Masaaki Kondo |
| 2024 | AAAI | Coordination of Emergent Demand Changes via Value-Based Negotiation for Supply Chain Management (Student Abstract). | Takumu Shimizu, Ryota Higa, Katsuhide Fujita, Shinji Nakadai |
| 2024 | IROS | Dual-Process Optimization for Multi-Vehicle Route Planning and Parts Collection Sequencing. | Ryota Higa, Takuro Kato, Florence Ho |
| 2023 | AAAI | Reward-Based Negotiating Agent Strategies. | Ryota Higa, Katsuhide Fujita, Toki Takahashi, Takumu Shimizu, Shinji Nakadai |
| 2023 | AAAI | Scalable Negotiating Agent Strategy via Multi-Issue Policy Network (Student Abstract). | Takumu Shimizu, Ryota Higa, Toki Takahashi, Katsuhide Fujita, Shinji Nakadai |
| 2022 | AAAI | VeNAS: Versatile Negotiating Agent Strategy via Deep Reinforcement Learning (Student Abstract). | Toki Takahashi, Ryota Higa, Katsuhide Fujita, Shinji Nakadai |
| 2020 | IROS | Path Negotiation for Self-interested Multirobot Vehicles in Shared Space. | Hiroaki Inotsume, Aayush Aggarwal, Ryota Higa, Shinji Nakadai |