Title
Convergence Rates For An Inexact Admm Applied To Separable Convex Optimization
Abstract
Convergence rates are established for an inexact accelerated alternating direction method of multipliers (I-ADMM) for general separable convex optimization with a linear constraint. Both ergodic and non-ergodic iterates are analyzed. Relative to the iteration number k, the convergence rate is O(1/k) in a convex setting and O(1/k(2)) in a strongly convex setting. When an error bound condition holds, the algorithm is 2-step linearly convergent. The I-ADMM is designed so that the accuracy of the inexact iteration preserves the global convergence rates of the exact iteration, leading to better numerical performance in the test problems.
Year
DOI
Venue
2020
10.1007/s10589-020-00221-y
COMPUTATIONAL OPTIMIZATION AND APPLICATIONS
Keywords
DocType
Volume
Separable convex optimization, Alternating direction method of multipliers, ADMM, Accelerated gradient method, Inexact methods, Global convergence, Convergence rates
Journal
77
Issue
ISSN
Citations 
3
0926-6003
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
William W. Hager11603214.67
Zhang Hongchao200.34