Takashi Okamoto

35 papers A* 1A 2B 9Misc 1Journal 10Unranked 12

Year	Rank	Type	Title / Venue / Authors
2025	A	`conf`	The First Star-by-star $N$-body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model. SC 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
2025	J	`jnl`	The First Star-by-star N-body/Hydrodynamics Simulation of Our Galaxy Coupling with a Surrogate Model. CoRR 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
2023	J	`jnl`	H₂ Performance Analysis and Synthesis for Discrete-Time Linear Systems With Dynamics Determined by an i.i.d. Process. IEEE Control. Syst. Lett. Yohei Hosoe, Takashi Okamoto, Tomomichi Hagiwara
2022	J	`jnl`	H2 Performance Analysis and Synthesis for Discrete-Time Linear Systems with Dynamics Determined by an i.i.d. Process. CoRR Yohei Hosoe, Takashi Okamoto, Tomomichi Hagiwara
2021	—	`conf`	Determinants of Purchase Intention in Online Purchasing During the COVID-19 Pandemic in Japan. MISNC Takashi Okamoto
2020	—	`conf`	Consumers' Priorities for Online Flea Market. MISNC/IEMT Takashi Okamoto, Jiro Yatsuhashi, Naoki Mizutani
2019	Misc	`conf`	Effect of Magnet Shapes on Metal Contamination Removal. CATA Takashi Ohnishi, Takashi Okamoto, Keiichi Watanuki
2019	—	`conf`	Japanese University Students' Acceptance of Cross-border Electronic Commerce. MISNC Takashi Okamoto, Jiro Yatsuhashi, Naoki Mizutani
2018	—	`conf`	Young People's Purchase Intentions in Online Flea Market. MISNC Takashi Okamoto, Jiro Yatsuhashi, Naoki Mizutani
2017	J	`jnl`	The Perceptual Gaps Between Companies' and University Students' Views on Fundamental Competencies. Rev. Socionetwork Strateg. Takashi Okamoto, Nobuyuki Soga, Taro Kumagai, Hideo Arai
2016	J	`jnl`	A Pareto Optimal Solution Visualization Method Using an Improved Growing Hierarchical Self-Organizing Maps Based on the Batch Learning. J. Adv. Comput. Intell. Intell. Informatics Naoto Suzuki, Takashi Okamoto, Seiichi Koakutsu
2016	B	`conf`	A Pareto optimal solution visualization method using SOM-NG with learning parameter optimization. SMC Yusuke Kobayashi, Takashi Okamoto, Seiichi Koakutsu
2016	J	`jnl`	Different perceptions of online shopping concerning product availability, consumer location, and experience. Int. J. Web Eng. Technol. Takashi Okamoto
2016	—	`conf`	Realities and Ideals of Competencies: The Perceptual Gaps between Companies and University Students. MISNC Takashi Okamoto, Nobuyuki Soga, Taro Kumagai, Hideo Arai
2015	B	`conf`	Equilibrium Solution Search on a Selfish Routing Problem with Multiple Constraints Using the Variable Metric Gradient Projection Method. SMC Koichi Yoshida, Takashi Okamoto, Seiichi Koakutsu
2015	B	`conf`	Visualization of Pareto optimal solutions using MIGSOM. CEC Naoto Suzuki, Takashi Okamoto, Seiichi Koakutsu
2014	B	`conf`	Constrained optimization using the chaotic sequential quadratic approximation type Lagrange quasi-Newton method. SMC Takashi Okamoto
2014	—	`conf`	Consumer Priorities in Online Shopping. KMO Takashi Okamoto
2013	B	`conf`	Chaotic Optimization Method without Initial Sampling Parameter Tuning - Empirical Comparisons of Two Approaches in Various Problems. SMC Takashi Okamoto, Hironori Hirata
2013	B	`conf`	Gamification of the Optimization Problem and Multi-point Type Optimization Methods. SMC Takashi Okamoto, Eitaro Aiyoshi
2013	J	`jnl`	Global optimization using a multipoint type quasi-chaotic optimization method. Appl. Soft Comput. Takashi Okamoto, Hironori Hirata
2013	—	`conf`	Japanese Students' Perception of B2C. KMO Takashi Okamoto
2011	B	`conf`	Constrained optimization using the quasi-chaotic optimization method with the exact penalty function and the sequential quadratic programming. SMC Takashi Okamoto, Hironori Hirata
2011	J	`jnl`	The robustness of a Nash equilibrium simulation model: Game-theoretic approach using variable metric projection method. Math. Comput. Simul. Eitaro Aiyoshi, Atsushi Maki, Takashi Okamoto
2011	—	`conf`	Using Choice Experiments to Value an Electronic Commerce. SAINT Nobuyuki Soga, Takashi Okamoto
2010	B	`conf`	Global optimization using a multi-point type quasi-chaotic optimization method with the simultaneous perturbation gradient approximation. SMC Takashi Okamoto, Hironori Hirata
2010	—	`conf`	The Study on Consumer Behavior of Online Shops. SAINT Takashi Okamoto
2009	B	`conf`	Constrained Optimization using the Lagrangian Method and the Improved Discrete Gradient Chaos Model. SMC Takashi Okamoto, Hironori Hirata
2009	—	`conf`	Information Sharing System for Maintenance of Sewage Facilities. SAINT Takashi Okamoto
2008	—	`conf`	B to C for Revitalizing Rural Economy. SAINT Takashi Okamoto
2008	J	`jnl`	Global optimization using a synchronization of multiple search Points autonomously driven by a chaotic dynamic model. J. Glob. Optim. Takashi Okamoto, Eitaro Aiyoshi
2008	A	`conf`	Visualization of Social Interactions in Facebook. ICWSM Takashi Okamoto, Kyle Buza
2005	—	`conf`	A Differential-analysis Approach for Improving SOAP Processing Performance. EEE Yoichi Takeuchi, Takashi Okamoto, Kazutoshi Yokoyama, Shigeyuki Matsuda
1991	J	`jnl`	Photorealistic image synthesis for outdoor scenery under various atmospheric conditions. Vis. Comput. Kazufumi Kaneda, Takashi Okamoto, Eihachiro Nakamae, Tomoyuki Nishita
1990	A*	`conf`	A lighting model aiming at drive simulators. SIGGRAPH Eihachiro Nakamae, Kazufumi Kaneda, Takashi Okamoto, Tomoyuki Nishita