Reconstruction of smooth contours from low resolution digital elevation model data. - Hiroyuki Goto; Tatsuya Ishige; Yoichi Shimakawa (IEEM, 2015)

Storage-efficient method for generating contours focusing on roundness. - Hiroyuki Goto; Yoichi Shimakawa (Int. J. Geogr. Inf. Sci., 2016)

Storage-efficient reconstruction framework for planar contours. - Hiroyuki Goto; Yoichi Shimakawa (Geo spatial Inf. Sci., 2017)

Lightweight Computation of Overlaid Traffic Flows by Shortest Origin-Destination Trips. - Hiroyuki Goto; Yohei Kakimoto; Yoichi Shimakawa (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2019)

A Railway Timetable Scheduling Model based on a Max-Plus-Linear System. - Kyohei Sagawa; Nozomi Yoshimura; Yoichi Shimakawa; Hiroyuki Goto (SICE, 2020)