Efficient Proximal Gradient Algorithms for Joint Graphical Lasso. - Jie Chen; Ryosuke Shimmura; Joe Suzuki (Entropy, 2021)

Estimation of a Simple Structure in a Multidimensional IRT Model Using Structure Regularization. - Ryosuke Shimmura; Joe Suzuki (Entropy, 2024)

Newton-Type Methods with the Proximal Gradient Step for Sparse Estimation. - Ryosuke Shimmura; Joe Suzuki (Oper. Res. Forum, 2024)