Adaptive basis expansion via (ℓ1) trend filtering. - Daeju Kim; Shuichi Kawano; Yoshiyuki Ninomiya (Comput. Stat., 2014)

Discriminant Analysis via Smoothly Varying Regularization. - Hisao Yoshida; Shuichi Kawano; Yoshiyuki Ninomiya (KES-IDT, 2021)

Smoothly varying regularization. - Daeju Kim; Shuichi Kawano; Yoshiyuki Ninomiya (Comput. Stat. Data Anal., 2023)

Generalized Triply Robust Information Criterion. - Yoshiyuki Ninomiya (KES-IDT, 2024)