Stochastic approximation was introduced in 1951 to provide a new theoretical framework for root finding and optimization of a regression function in the then-nascent field of statistics. This review shows how it has evolved in response to other developments in statistics, notably time series and sequential analysis, and to applications in artificial intelligence, economics and engineering. Its resurgence in the big data era has led to new advances in both theory and applications of this microcosm of statistics and data science.
"Stochastic Approximation: From Statistical Origin to Big-Data, Multidisciplinary Applications." Statist. Sci. 36 (2) 291 - 302, May 2021. https://doi.org/10.1214/20-STS784