| 2025 | SC | The First Star-by-star $N$-body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model. | Keiya Hirashima, Michiko S. Fujii, Takayuki R. Saitoh, Naoto Harada, Kentaro Nomura, Kohji Yoshikawa, Yutaka Hirai, Tetsuro Asano, Kana Moriwaki, Masaki Iwasawa, Takashi Okamoto, Junichiro Makino |
| 2019 | CATA | Effect of Magnet Shapes on Metal Contamination Removal. | Takashi Ohnishi, Takashi Okamoto, Keiichi Watanuki |
| 2016 | SMC | A Pareto optimal solution visualization method using SOM-NG with learning parameter optimization. | Yusuke Kobayashi, Takashi Okamoto, Seiichi Koakutsu |
| 2015 | CEC | Visualization of Pareto optimal solutions using MIGSOM. | Naoto Suzuki, Takashi Okamoto, Seiichi Koakutsu |
| 2015 | SMC | Equilibrium Solution Search on a Selfish Routing Problem with Multiple Constraints Using the Variable Metric Gradient Projection Method. | Koichi Yoshida, Takashi Okamoto, Seiichi Koakutsu |
| 2014 | SMC | Constrained optimization using the chaotic sequential quadratic approximation type Lagrange quasi-Newton method. | Takashi Okamoto |
| 2013 | SMC | Gamification of the Optimization Problem and Multi-point Type Optimization Methods. | Takashi Okamoto, Eitaro Aiyoshi |
| 2013 | SMC | Chaotic Optimization Method without Initial Sampling Parameter Tuning - Empirical Comparisons of Two Approaches in Various Problems. | Takashi Okamoto, Hironori Hirata |
| 2011 | SMC | Constrained optimization using the quasi-chaotic optimization method with the exact penalty function and the sequential quadratic programming. | Takashi Okamoto, Hironori Hirata |
| 2010 | SMC | Global optimization using a multi-point type quasi-chaotic optimization method with the simultaneous perturbation gradient approximation. | Takashi Okamoto, Hironori Hirata |
| 2009 | SMC | Constrained Optimization using the Lagrangian Method and the Improved Discrete Gradient Chaos Model. | Takashi Okamoto, Hironori Hirata |
| 2008 | ICWSM | Visualization of Social Interactions in Facebook. | Takashi Okamoto, Kyle Buza |
| 1990 | SIGGRAPH | A lighting model aiming at drive simulators. | Eihachiro Nakamae, Kazufumi Kaneda, Takashi Okamoto, Tomoyuki Nishita |