| 2025 | SIGdial | Identification and Analysis of Identity-Centric Elements of Character-Likeness in Game Scenario. | Shinji Iwata, Koya Ihara, Shiki Sato, Jun Baba, Asahi Hentona, Masahiro Yamazaki, Yuki Shiotsuka, Takahiro Ishizue, Akifumi Yoshimoto |
| 2024 | ICAART | Generating Products Placement in Warehouse Using BLPSO and MIQCPs. | Ayaka Sugiura, Takahiro Suzuki, Koya Ihara, Takuto Sakuma, Shohei Kato |
| 2021 | CEC | A Novel Sampling Method with Lvy Flight for Distribution-Based Discrete Particle Swarm Optimization. | Koya Ihara, Shohei Kato |
| 2020 | GECCO | Cooperative coevolutionary genetic algorithm using hierarchical clustering of linkage tree. | Takatoshi Niwa, Koya Ihara, Shohei Kato |
| 2019 | GECCO | A group work inspired generation alternation model of real-coded GA. | Takatoshi Niwa, Koya Ihara, Shohei Kato |
| 2019 | ICAART | A PSO based Approach to Assign Segments for Reducing Excavated Soil in Shield Tunneling. | Koya Ihara, Shohei Kato, Takehiko Nakaya, Tomoaki Ogi, Hiroichi Masuda |
| 2019 | ICAART | Application of PSO-Based Constrained Combinatorial Optimization to Segment Assignment in Shield Tunneling. | Koya Ihara, Shohei Kato, Takehiko Nakaya, Tomoaki Ogi, Hiroichi Masuda |