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Minimax separation of the Cauchy kernel - MaRDI portal

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Minimax separation of the Cauchy kernel

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Publication:6325345

arXiv1909.06911MaRDI QIDQ6325345

Author name not available (Why is that?)

Publication date: 15 September 2019

Abstract: We prove and apply an optimal low-rank approximation of the Cauchy kernel over separated real domains. A skeleton decomposition is the minimum over real-valued functions of the maximum relative pointwise error. We present an algorithm to optimize its parameters, demonstrate suboptimal but effective heuristic approximations, and identify numerically stable forms.




Has companion code repository: https://github.com/godotalgorithm/zolotarev-number








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