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• W2890473586 abstract "In this work we study of the dynamics of large-size random neural networks. Different methods have been developed to analyze their behavior, and most of them rely on heuristic methods based on Gaussian assumptions regarding the fluctuations in the limit of infinite sizes. These approaches, however, do not justify the underlying assumptions systematically. Furthermore, they are incapable of deriving in general the stability of the derived mean-field equations, and they are not amenable to analysis of finite-size corrections. Here we present a systematic method based on path integrals which overcomes these limitations. We apply the method to a large nonlinear rate-based neural network with random asymmetric connectivity matrix. We derive the dynamic mean field (DMF) equations for the system and the Lyapunov exponent of the system. Although the main results are well known, here we present the detailed calculation of the spectrum of fluctuations around the mean-field equations from which we derive the general stability conditions for the DMF states. The methods presented here can be applied to neural networks with more complex dynamics and architectures. In addition, the theory can be used to compute systematic finite-size corrections to the mean-field equations." @default.
• W2890473586 created "2018-09-27" @default.
• W2890473586 creator A5034553663 @default.
• W2890473586 creator A5047699346 @default.
• W2890473586 date "2018-12-13" @default.
• W2890473586 modified "2023-10-01" @default.
• W2890473586 title "Path integral approach to random neural networks" @default.
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• W2890473586 doi "https://doi.org/10.1103/physreve.98.062120" @default.
• W2890473586 hasPublicationYear "2018" @default.
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