Numerical Differentiation of Noisy, Nonsmooth Data
Abstract
We consider the problem of differentiating a function specified by noisy data. Regularizing the differentiation process avoids the noise amplification of finite-difference methods. We use total-variation regularization, which allows for discontinuous solutions. The resulting simple algorithm accurately differentiates noisy functions, including those which have a discontinuous derivative.
- Authors:
-
- Theoretical Division, MS B284, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1198314
- Resource Type:
- Published Article
- Journal Name:
- ISRN Applied Mathematics
- Additional Journal Information:
- Journal Name: ISRN Applied Mathematics Journal Volume: 2011; Journal ID: ISSN 2090-5564
- Publisher:
- Hindawi (International Scholarly Research Network)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Citation Formats
Chartrand, Rick. Numerical Differentiation of Noisy, Nonsmooth Data. Country unknown/Code not available: N. p., 2011.
Web. doi:10.5402/2011/164564.
Chartrand, Rick. Numerical Differentiation of Noisy, Nonsmooth Data. Country unknown/Code not available. https://doi.org/10.5402/2011/164564
Chartrand, Rick. Wed .
"Numerical Differentiation of Noisy, Nonsmooth Data". Country unknown/Code not available. https://doi.org/10.5402/2011/164564.
@article{osti_1198314,
title = {Numerical Differentiation of Noisy, Nonsmooth Data},
author = {Chartrand, Rick},
abstractNote = {We consider the problem of differentiating a function specified by noisy data. Regularizing the differentiation process avoids the noise amplification of finite-difference methods. We use total-variation regularization, which allows for discontinuous solutions. The resulting simple algorithm accurately differentiates noisy functions, including those which have a discontinuous derivative.},
doi = {10.5402/2011/164564},
journal = {ISRN Applied Mathematics},
number = ,
volume = 2011,
place = {Country unknown/Code not available},
year = {Wed May 11 00:00:00 EDT 2011},
month = {Wed May 11 00:00:00 EDT 2011}
}
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https://doi.org/10.5402/2011/164564
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