papers
Publications (12)
math.OC2025
Simple linesearch-free first-order methods for nonconvex optimization
Shotaro Yagishita, Masaru Ito
math.OC2024
Exact Penalization at D-Stationary Points of Cardinality- or Rank-Constrained Problem
Shotaro Yagishita, Jun-ya Gotoh
math.OC2025
Convergence of linesearch-based generalized conditional gradient methods without smoothness assumptions
Shotaro Yagishita
math.OC2026
A proximal gradient method with adaptive backtracking for weakly smooth multiobjective optimization
Yuki Miyazaki, Masaru Ito, Shotaro Yagishita
math.PR2022
Some Martingale Properties of Simple Random Walk and Its Maximum Process
Takahiko Fujita, Shotaro Yagishita, Naohiro Yoshida
math.OC2021
Pursuit of the Cluster Structure of Network Lasso: Recovery Condition and Non-convex Extension
Shotaro Yagishita, Jun-ya Gotoh
stat.CO2024
Fast algorithm for sparse least trimmed squares via trimmed-regularized reformulation
Shotaro Yagishita
math.OC2023
Proximal Diagonal Newton Methods for Composite Optimization Problems
Shotaro Yagishita, Shummin Nakayama
q-fin.MF2024
Optimal reinsurance and investment via stochastic projected gradient method based on Malliavin calculus
Yuta Otsuki, Shotaro Yagishita
math.OC2026
Proximal gradient-type method with generalized distance and convergence analysis without global descent lemma
Shotaro Yagishita, Masaru Ito
stat.ME2025
Outlier-robust neural network training: variation regularization meets trimmed loss to prevent functional breakdown
Akifumi Okuno, Shotaro Yagishita
math.OC2023
Exact Penalty Method for Knot Selection of B-Spline Regression
Shotaro Yagishita, Jun-ya Gotoh