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Analysing heavy-tail properties of Stochastic Gradient Descent by means of Stochastic Recurrence Equations
March 22, 2024, 4:42 a.m. | Ewa Damek, Sebastian Mentemeier
cs.LG updates on arXiv.org arxiv.org
Abstract: In recent works on the theory of machine learning, it has been observed that heavy tail properties of Stochastic Gradient Descent (SGD) can be studied in the probabilistic framework of stochastic recursions. In particular, G\"{u}rb\"{u}zbalaban et al. (arXiv:2006.04740) considered a setup corresponding to linear regression for which iterations of SGD can be modelled by a multivariate affine stochastic recursion $X_k=A_k X_{k-1}+B_k$, for independent and identically distributed pairs $(A_k, B_k)$, where $A_k$ is a random symmetric …
abstract arxiv cs.lg framework gradient machine machine learning math.oc math.pr math.st setup stat.ml stat.th stochastic theory type
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