Browsing AI Memos (1959 - 2004) by Author "Xu, Lei,S.M.Massachusetts Institute of Technology."
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Convergence Results for the EM Approach to Mixtures of Experts Architectures
Jordan, Michael I.; Xu, Lei (1993-11-01)The Expectation-Maximization (EM) algorithm is an iterative approach to maximum likelihood parameter estimation. Jordan and Jacobs (1993) recently proposed an EM algorithm for the mixture of experts architecture of ... -
On Convergence Properties of the EM Algorithm for Gaussian Mixtures
Jordan, Michael; Xu, Lei (1995-04-21)"Expectation-Maximization'' (EM) algorithm and gradient-based approaches for maximum likelihood learning of finite Gaussian mixtures. We show that the EM step in parameter space is obtained from the gradient via a ...