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math.OC2023
Augmenting Iterative Trajectory for Bilevel Optimization: Methodology, Analysis and Extensions
Risheng Liu, Yaohua Liu, Shangzhi Zeng +1
In recent years, there has been a surge of machine learning applications developed with hierarchical structure, which can be approached from Bi-Level Optimization (BLO) perspective…
math.OC2023
Averaged Method of Multipliers for Bi-Level Optimization without Lower-Level Strong Convexity
Risheng Liu, Yaohua Liu, Wei Yao +2
Gradient methods have become mainstream techniques for Bi-Level Optimization (BLO) in learning fields. The validity of existing works heavily rely on either a restrictive Lower-Lev…
math.OC2019
Communication-Censored Linearized ADMM for Decentralized Consensus Optimization
Weiyu Li, Yaohua Liu, Zhi Tian +1
In this paper, we propose a communication- and computation-efficient algorithm to solve a convex consensus optimization problem defined over a decentralized network. A remarkable e…