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• W2951668192 abstract "The paper is devoted to the solution of a weighted nonlinear least-squares problem for low-rank signal estimation, which is related to Hankel structured low-rank approximation problems. A modified weighted Gauss-Newton method, which uses projecting on the image space of the signal, is proposed to solve this problem. The advantage of the proposed method is the possibility of its numerically stable and fast implementation. For a weight matrix, which corresponds to an autoregressive process of order $p$, the computational cost of iterations is $O(N r^2 + N p^2 + r N log N)$, where $N$ is the time series length, $r$ is the rank of the approximating time series. For developing the method, some useful properties of the space of time series of rank $r$ are studied. The method is compared with state-of-the-art methods based on the variable projection approach in terms of numerical stability, accuracy and computational cost." @default.
• W2951668192 created "2019-06-27" @default.
• W2951668192 creator A5027182783 @default.
• W2951668192 creator A5036930517 @default.
• W2951668192 date "2018-03-04" @default.
• W2951668192 modified "2023-09-27" @default.
• W2951668192 title "Image space projection for low-rank signal estimation: Modified Gauss-Newton method" @default.
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• W2951668192 hasPublicationYear "2018" @default.
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