Robust Dynamic Mode Decomposition
- Arak University (Iran)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
This paper develops a robust dynamic mode decomposition (RDMD) method endowed with statistical and numerical robustness. Statistical robustness ensures estimation efficiency at the Gaussian and non-Gaussian probability distributions, including heavy-tailed distributions. The proposed RDMD is statistically robust because the outliers in the data set are flagged via projection statistics and suppressed using a Schweppe-type Huber generalized maximum-likelihood estimator that minimizes a convex Huber cost function. The latter is solved using the iteratively reweighted least-squares algorithm that is known to exhibit an excellent convergence property and numerical stability than the Newton algorithms. Several numerical simulations using canonical models of dynamical systems demonstrate the excellent performance of the proposed RDMD method. The results reveal that it outperforms several other methods proposed in the literature.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1872670
- Alternate ID(s):
- OSTI ID: 1873781; OSTI ID: 1880331
- Report Number(s):
- NREL/JA-5D00-79972; MainId:41177; UUID:0ce6763b-8174-4bd4-9c07-a875f7be97fd; MainAdminID:65042
- Journal Information:
- IEEE Access, Vol. 10; ISSN 2169-3536
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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dynamic mode decomposition
outlier detection
robust estimation
robust regression
robust statistics
probability distribution
numerical models
government
time measurement
sensitivity
filtering theory
Gaussian distribution
impulse noise
iterative methods
least square approximations
maximum likelihood estimation
numerical stability