2 papers
math.OC2026
A DC Composite Optimization via Variable Smoothing for Robust Phase Retrieval with Nonconvex Loss Functions
Kumataro Yazawa, Keita Kume, Isao Yamada
In this paper, we propose an optimization-based method for robust phase retrieval problem where the goal is to estimate an unknown signal from a quadratic measurement corrupted by…
math.OC2025
Variable smoothing algorithm for inner-loop-free DC composite optimizations
Kumataro Yazawa, Keita Kume, Isao Yamada
We propose a variable smoothing algorithm for minimizing a nonsmooth and nonconvex cost function. The cost function is the sum of a smooth function and a composition of a differenc…