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- W2792692421 abstract "Abstract We derive a new method for optimal ℓ 2 ‐approximation of discrete signals on ℓ 2 (ℕ 0 ) whose entries can be represented as an exponential sum of finite length. Our approach employs Prony's method in a first step to recover the exponential sum that is determined by the signal. In the second step we use the theory of Adamjan, Arov and Krein (AAK) to derive an algorithm for computing a shorter exponential sum that approximates the original signal in the ℓ 2 ‐norm well. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
- W2792692421 created "2018-03-29" @default.
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- W2792692421 date "2017-12-01" @default.
- W2792692421 modified "2023-09-23" @default.
- W2792692421 title "Application of the AAK theory and Prony-like Methods for sparse approximation of exponential sums" @default.
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- W2792692421 doi "https://doi.org/10.1002/pamm.201710385" @default.
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