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Analysis of a nonsmooth optimization approach to robust estimation
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- Bako, Laurent (author)
- University of Lyon, France
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- Ohlsson, Henrik (author)
- Linköpings universitet,Institutionen för systemteknik,Tekniska fakulteten,University of Calif Berkeley, CA 94720 USA
- (creator_code:org_t)
- PERGAMON-ELSEVIER SCIENCE LTD, 2016
- 2016
- English.
- In: Automatica. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0005-1098 .- 1873-2836. ; 66, s. 132-145
- Journal article (peer-reviewed)
Abstract
Subject headings
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- In this paper, we consider the problem of identifying a linear map from measurements which are subject to intermittent and arbitrarily large errors. This is a fundamental problem in many estimation-related applications such as fault detection; state estimation in lossy networks, hybrid system identification, robust estimation, etc. The problem is hard because it exhibits some intrinsic combinatorial features. Therefore, obtaining an effective solution necessitates relaxations that are both solvable at a reasonable cost and effective in the sense that they can return the true parameter vector. The current paper discusses a nonsmooth convex optimization approach and provides a new analysis of its behavior. In particular, it is shown that under appropriate conditions on the data, an exact estimate can be recovered from data corrupted by a large (even infinite) number of gross errors. (C) 2016 Elsevier Ltd. All rights reserved.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Robust estimation; Outliers; System identification; Nonsmooth optimization
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- ref (subject category)
- art (subject category)
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