An Educational Support System based on Automatic Impasse Detection in Programming Exercises. - Koichi Yamashita; Takumi Sugiyama; Satoru Kogure; Yasuhiro Noguchi; Tatsuhiro Konishi; Yukihiro Itoh (ICCE, 2017)

Differentially Private Frequency Tables Based on Random Sampling. - Takumi Sugiyama; Kazuhiro Minami (IEEE Big Data, 2023)

Utility Analysis of Differentially Private Anonymized Data Based on Random Sampling. - Takumi Sugiyama; Hiroto Oosugi; Io Yamanaka; Kazuhiro Minami (PSD, 2024)