Title
Centered solutions for uncertain linear equations.
Abstract
Our contribution is twofold. Firstly, for a system of uncertain linear equations where the uncertainties are column-wise and reside in general convex sets, we derive convex representations for united and tolerable solution sets. Secondly, to obtain centered solutions for uncertain linear equations, we develop a new method based on adjustable robust optimization (ARO) techniques to compute the maximum size inscribed convex body (MCB) of the set of the solutions. In general, the obtained MCB is an inner approximation of the solution set, and its center is a potential solution to the system. We use recent results from ARO to characterize for which convex bodies the obtained MCB is optimal. We compare our method both theoretically and numerically with an existing method that minimizes the worst-case violation. Applications to the input–output model, Colley’s Matrix Rankings and Article Influence Scores demonstrate the advantages of the new method.
Year
DOI
Venue
2017
10.1007/s10287-017-0290-9
Comput. Manag. Science
Keywords
Field
DocType
Interval linear systems,Uncertain linear equations,(Adjustable)Robust optimization,Maximum volume inscribed ellipsoid,Robust least-squares
Linear equation,Mathematical optimization,Convex body,Matrix (mathematics),Robust optimization,Inscribed figure,Regular polygon,Solution set,Ellipsoid method,Mathematics
Journal
Volume
Issue
ISSN
14
4
1619-697X
Citations 
PageRank 
References 
0
0.34
12
Authors
2
Name
Order
Citations
PageRank
Jianzhe Zhen140.75
Dick Den Hertog251375.39