Hybrid Riemannian conjugate gradient methods with global convergence properties. - Hiroyuki Sakai 007; Hideaki Iiduka (Comput. Optim. Appl., 2020)

Sufficient Descent Riemannian Conjugate Gradient Methods. - Hiroyuki Sakai 007; Hideaki Iiduka (J. Optim. Theory Appl., 2021)

Riemannian stochastic fixed point optimization algorithm. - Hideaki Iiduka; Hiroyuki Sakai 007 (Numer. Algorithms, 2022)

Riemannian Adaptive Optimization Algorithm and its Application to Natural Language Processing. - Hiroyuki Sakai 007; Hideaki Iiduka (IEEE Trans. Cybern., 2022)

Global convergence of Hager-Zhang type Riemannian conjugate gradient method. - Hiroyuki Sakai 007; Hiroyuki Sato; Hideaki Iiduka (Appl. Math. Comput., 2023)

Modified Memoryless Spectral-Scaling Broyden Family on Riemannian Manifolds. - Hiroyuki Sakai 007; Hideaki Iiduka (J. Optim. Theory Appl., 2024)

A general framework of Riemannian adaptive optimization methods with a convergence analysis. - Hiroyuki Sakai 007; Hideaki Iiduka (Trans. Mach. Learn. Res., 2025)