3 citations · 6 across the 8 of their papers we have counts for
4 papers · 1 filter
M-duality in fixed-point problems for general normed spaces
Jongmin Lee, Sangyeop Woo, Ernest K. Ryu
Solving fixed-point problems by reducing residual bounds is one of the central approaches in fixed-point iteration, and, in particular, the Halpern iteration is known to effectivel…
Policy Gradient Algorithms in Average-Reward Multichain MDPs
Jongmin Lee, Ernest K. Ryu
While there is an extensive body of research analyzing policy gradient methods for discounted cumulative-reward MDPs, prior work on policy gradient methods for average-reward MDPs…
Convergence Analyses of Davis-Yin Splitting via Scaled Relative Graphs
Jongmin Lee, Soheun Yi, Ernest K. Ryu
Davis-Yin splitting (DYS) has found a wide range of applications in optimization, but its linear rates of convergence have not been studied extensively. The scaled relative graph (…
A Geometric Structure of Acceleration and Its Role in Making Gradients Small Fast
Jongmin Lee, Chanwoo Park, Ernest K. Ryu
Since Nesterov's seminal 1983 work, many accelerated first-order optimization methods have been proposed, but their analyses lacks a common unifying structure. In this work, we ide…