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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao zbMATH Openarrow_drop_down
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SIAM Journal on Control and Optimization
Article . 1993 . Peer-reviewed
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A Globally Convergent Stochastic Approximation

A globally convergent stochastic approximation
Authors: Sid Yakowitz;

A Globally Convergent Stochastic Approximation

Abstract

Summary: By combining a constrained Kiefer-Wolfowitz search with an automatic learning algorithm, it is shown that asymptotically normal convergence of an estimator to a global optimum under reasonably lenient assumptions can be attained. It is enough that the objective function be smooth and locally strictly convex at its minima. The central conclusion is that if \(\theta_ n\) is the estimate produced by the method shown at the \(n\)th decision epoch, then for some global minimizer \(\theta^*\), \(n^{1/3}(\theta_ n-\theta^*)\) is asymptotically normally distributed. This coincides with the conventional Kiefer-Wolfowitz convergence rate to a local optimum. Whereas this study was motivated by needs of machine learning, the basic plan would seem applicable to root- finding tasks, and to other types of stochastic approximation algorithms.

Keywords

Stochastic approximation, asymptotic normality, Nonparametric inference, root-finding, global minimizer, random search, constrained Kiefer-Wolfowitz search, automatic learning algorithm, almost sure convergence, global optimum, asymptotically normal convergence

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
36
Average
Top 10%
Top 10%
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