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- W2903087111 abstract "In this paper, we investigate the convergence performance of a cooperative diffusion Gauss-Newton (GN) method, which is widely used to solve the nonlinear least squares problems (NLLS) due to the low computation cost compared with Newton's method. This diffusion GN collects the diversity of temporalspatial information over the network, which is used on local updates. In order to address the challenges on convergence analysis, we firstly consider to form a global recursion relation over spatial and temporal scales since the traditional GN is a time iterative method and the network-wide NLLS need to be solved. Secondly, the derived recursion related to the networkwide deviation between the successive two iterations is ambiguous due to the uncertainty of descent discrepancy in GN update step between two versions of cooperation and non-cooperation. Thus, an important work is to derive the boundedness conditions of this discrepancy. Finally, based on the temporal-spatial recursion relation and the steady-state equilibria theory for discrete dynamical systems, we obtain the sufficient conditions for algorithm convergence, which require the good initial guesses, reasonable step size values and network connectivity. Such analysis provides a guideline for the applications based on this diffusion GN method." @default.
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- W2903087111 date "2018-11-29" @default.
- W2903087111 modified "2023-09-26" @default.
- W2903087111 title "Convergence Analysis of a Cooperative Diffusion Gauss-Newton Strategy" @default.
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- W2903087111 doi "https://doi.org/10.48550/arxiv.1811.12806" @default.
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