scispace - formally typeset
Open AccessJournal ArticleDOI

A Constrained Formulation of Maximum-Likelihood Estimation for Normal Mixture Distributions

Richard J. Hathaway
- 01 Jun 1985 - 
- Vol. 13, Iss: 2, pp 795-800
Reads0
Chats0
TLDR
In this paper, the authors reformulated the maximum likelihood method of maximum likelihood in the case of a mixture of normal distributions into an optimization problem having a strongly consistent, global solution.
Abstract
The method of maximum likelihood leads to an ill-posed optimization problem in the case of a mixture of normal distributions. Estimation in the univariate case is reformulated using simple constraints into an optimization problem having a strongly consistent, global solution.

read more

Citations
More filters
Journal ArticleDOI

Robust text-independent speaker identification using Gaussian mixture speaker models

TL;DR: The individual Gaussian components of a GMM are shown to represent some general speaker-dependent spectral shapes that are effective for modeling speaker identity and is shown to outperform the other speaker modeling techniques on an identical 16 speaker telephone speech task.
Journal ArticleDOI

Consistent estimation of a mixing distribution

TL;DR: In this paper, a maximum-penalized likelihood method is proposed for estimating a mixing distribution and it is shown that this method produces a consistent estimator, in the sense of weak convergence.
Journal ArticleDOI

Model-Based Clustering

TL;DR: A review of work to date in model-based clustering, from the famous paper by Wolfe in 1965 to work that is currently available only in preprint form, and a look ahead to the next decade or so.
Journal ArticleDOI

Large-scale multiple testing under dependence

TL;DR: In this paper, the problem of multiple testing under dependence in a compound decision theoretic framework is considered, where the observed data are assumed to be generated from an underlying two-state hidden Markov model.
Journal ArticleDOI

Finite mixture models and model-based clustering

TL;DR: A detailed review into mixture models and model-based clustering is provided, for providing a convenient yet formal framework for clustering and classication.
References
More filters
Journal ArticleDOI

Mixture densities, maximum likelihood, and the EM algorithm

Richard A. Redner, +1 more
- 01 Apr 1984 - 
TL;DR: This work discusses the formulation and theoretical and practical properties of the EM algorithm, a specialization to the mixture density context of a general algorithm used to approximate maximum-likelihood estimates for incomplete data problems.
Journal ArticleDOI

Consistency of the maximum likelihood estimator in the presence of infinitely many incidental parameters

TL;DR: In this paper, the authors considered the problem of consisteently estimating 0 (as n --* X ), where the chance variables were assumed to be scalars, and the parameters 0 and ai may be vectors.
Journal ArticleDOI

Estimating the components of a mixture of normal distributions

TL;DR: In this article, the problem of estimating the components of a mixture of two normal distributions, multivariate or otherwise, with common but unknown covariance matrices is examined, and the maximum likelihood equations are shown to be not unduly laborious to solve and the sampling properties of the resulting estimates are investigated.
Journal ArticleDOI

Estimating Mixtures of Normal Distributions and Switching Regressions

TL;DR: In this article, the authors introduced the "moment generating function estimator" which minimizes the sum of squares of differences between the theoretical and sample moment generating functions, and applied it to the Hamermesh model of wage bargain determination.