| 2020 | CEC | Motivating Participants in Human-based Evolutionary Computation Systems. | Tomotaka Watanabe, Yunhao Zhu, Tomohiro Yoshikawa, Kei Ohnishi |
| 2020 | GECCO | A test problem with difficulty in decomposing into sub-problems for model-based genetic algorithms. | Kei Ohnishi, Shota Ikeda, Tian-Li Yu |
| 2019 | GECCO | An intuitive and traceable human-based evolutionary computation system for solving problems in human organizations. | Kei Ohnishi, Tomohiro Yoshikawa, Tian-Li Yu |
| 2018 | GECCO | The human-based evolutionary computation system enabling us to follow the solution evolution. | Kousuke Fujimoto, Kei Ohnishi, Tomohiro Yoshikawa |
| 2018 | SMC | A Metaheuristic Relying on Random Walk on a Graph for Binary Optimization Problems. | Takuya Sato, Kei Ohnishi |
| 2016 | CEC | Non-swarm intelligence search algorithm based on the foraging behaviors of fruit flies. | Kei Ohnishi, Akihiro Fujiwara, Mario Koeppen |
| 2015 | CEC | A morphogenetic and evolutionary approach to regulating wireless access points for energy-efficient and reliable connection services. | Kei Ohnishi, Kazuya Tsukamoto, Shigeru Kashihara |
| 2015 | CEC | Mutation-based receiver search in a network for temporary information sharing. | Kei Ohnishi, Kazuya Tsukamoto, Mario Kppen |
| 2015 | SMC | Neural Signature of Efficiency Relations. | Sebastin Basterrech, Kei Ohnishi, Mario Kppen |
| 2014 | COMPSAC | Maxmin Fairness under Priority for Network Resource Allocation Tasks. | Mario Kppen, Kei Ohnishi, Masato Tsuru |
| 2014 | ISDA | Ensemble relations for resource allocation tasks. | Mario Kppen, Kei Ohnishi, Masato Tsuru |
| 2014 | SMC | Particular fine-grained parallel GA for simulation study of distributed human-based GA. | Junya Okano, Kouta Hamano, Kei Ohnishi, Mario Kppen |
| 2013 | COMPSAC | Knaster Procedure for Proportional Fair Wireless Channel Allocation. | Mario Kppen, Kei Ohnishi, Masato Tsuru |
| 2013 | COMPSAC | Parallel Evolutionary P2P Networking Technique Evaluating Network Topologies Sequentially. | Kei Ohnishi, Mario Kppen |
| 2013 | ISDA | Significance relations for the benchmarking of meta-heuristic algorithms. | Mario Kppen, Kei Ohnishi |
| 2012 | AINA | Inducing Scale-Free Characteristics of Dynamic Unstructured P2P Networks. | Jun'ichi Shimada, Kei Ohnishi, Hitomi Tamura, Yuji Oie |
| 2012 | SMC | Genetic clustering based on segregation distortion caused by selfish genes. | Kei Ohnishi, Mario Kppen, Chang Wook Ahn, Kaori Yoshida |
| 2011 | HIS | A GRATIS theorem for relational optimization. | Mario Kppen, Kaori Yoshida, Kei Ohnishi |
| 2011 | ICCCN | Self-Adaptive Routing for Temporary Information Sharing in Wireless Mesh Networks. | Kei Ohnishi, Takeshi Koga, Kazuya Tsukamoto, Yuji Oie |
| 2009 | ArtsIT | Pattern Formation in Networks Inspired by Biological Development. | Kei Ohnishi, Kaori Yoshida, Mario Kppen |
| 2007 | HIS | Performance Trade-off Exploration by Query-Trail-Mediated Topology Reconstruction in Unstructured P2P Networks. | Kei Ohnishi, Satoshi Nagamatsu, Yuji Oie |
| 2005 | GECCO | Evolutionary change in developmental timing. | Kei Ohnishi, Kaori Yoshida |
| 2004 | GECCO | Enhanced Innovation: A Fusion of Chance Discovery and Evolutionary Computation to Foster Creative Processes and Decision Making. | Xavier Llor, Kei Ohnishi, Ying-Ping Chen, David E. Goldberg, Michael Welge |
| 2004 | GECCO | Inducing Sequentiality Using Grammatical Genetic Codes. | Kei Ohnishi, Kumara Sastry, Ying-Ping Chen, David E. Goldberg |
| 2004 | HIS | A Constructive Approach to Creating A Method for Generating Images. | Kei Ohnishi, Kaori Yoshida |
| 2003 | SMC | Adapting genotype-phenotype-mapping by using redundant real representation. | Kei Ohnishi |
| 2000 | SMC | Feedback model inspired by biological development to hierarchically design complex structure. | Kei Ohnishi, Hideyuki Takagi |