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math.OC2022
Global Convergence of Hager-Zhang type Riemannian Conjugate Gradient Method
Hiroyuki Sakai, Hiroyuki Sato, Hideaki Iiduka
This paper presents the Hager-Zhang (HZ)-type Riemannian conjugate gradient method that uses the exponential retraction. We also present global convergence analyses of our proposed…
math.OC2016
Fixed Point Algorithm for Solving Nonmonotone Variational Inequalities in Nonnegative Matrix Factorization
Hideaki Iiduka, Shizuka Nishino
Nonnegative matrix factorization (NMF), which is the approximation of a data matrix as the product of two nonnegative matrices, is a key issue in machine learning and data analysis…