Escape from the speed down areas on training of backpropagation algorithm by using a jumping method. - Kotaro Yamada; Akira Taguchi; Nobukazu Iijima; Yoshinao Akima; Mototaka Sone (ICNN, 1995)

Confluence of Swallowtail Singularities of the Hyperbolic Schwarz Map Defined by the Hypergeometric Differential Equation. - Masayuki Noro; Takeshi Sasaki; Kotaro Yamada; Masaaki Yoshida (Exp. Math., 2008)

The Hyperbolic Schwarz Map for the Hypergeometric Differential Equation. - Takeshi Sasaki; Kotaro Yamada; Masaaki Yoshida (Exp. Math., 2008)

On the existence of four or more curved foldings with common creases and crease patterns. - Atsufumi Honda; Kosuke Naokawa; Kentaro Saji; Masaaki Umehara; Kotaro Yamada (CoRR, 2019)

Curved foldings with common creases and crease patterns. - Atsufumi Honda; Kosuke Naokawa; Kentaro Saji; Masaaki Umehara; Kotaro Yamada (Adv. Appl. Math., 2020)

Overlap-Free Pattern Formation Method Using Particle Swarm Optimization. - Kotaro Yamada; Toshiharu Sugawara (KES, 2024)

Integer Programming Approaches to an Issue of Scheduling for a Truck-Drone Last-Mile Delivery System with Parcel Pickup Service. - Kotaro Yamada; Yoshiyuki Karuno; Hitoshi Iima (SCIS/ISIS, 2024)

Development of Automated Data Quality Assessment and Evaluation Indices by Analytical Experience. - Yuka Haruki; Kei Kato; Yuki Enami; Hiroaki Takeuchi; Daiki Kazuno; Kotaro Yamada; Teruaki Hayashi (CoRR, 2025)