A unified approach to selecting optimal step lengths for adaptive vector quantizers

Abstract

This paper presents expressions for the optimal step length to use when training a vector quantizer by stochastic approximation. By treating each update as an estimation problem it provides a unified framework covering both batch and incremental training which were previously treated separately and extends existing results to the semibatch case. In addition the new results presented here provide a measurable improvement over results which were previously thought to be optimal. © 1996 IEEE.