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A Study of Algorithms for Covariance Structure Analysis with Specific Comparisons using Factor Analysis

Published online by Cambridge University Press:  01 January 2025

S. Y. Lee*
Affiliation:
The Chinese University of Hong Kong
R. I. Jennrich
Affiliation:
University of California at Los Angeles
*
Requests for reprints should be sent to Dr. Sik-Yum Lee, Department of Mathematics, University of Science Centre, The Chinese University of Hong Kong, Shatin, N.T., HONG KONG.

Abstract

Several algorithms for covariance structure analysis are considered in addition to the Fletcher-Powell algorithm. These include the Gauss-Newton, Newton-Raphson, Fisher Scoring, and Fletcher-Reeves algorithms. Two methods of estimation are considered, maximum likelihood and weighted least squares. It is shown that the Gauss-Newton algorithm which in standard form produces weighted least squares estimates can, in iteratively reweighted form, produce maximum likelihood estimates as well. Previously unavailable standard error estimates to be used in conjunction with the Fletcher-Reeves algorithm are derived. Finally all the algorithms are applied to a number of maximum likelihood and weighted least squares factor analysis problems to compare the estimates and the standard errors produced. The algorithms appear to give satisfactory estimates but there are serious discrepancies in the standard errors. Because it is robust to poor starting values, converges rapidly and conveniently produces consistent standard errors for both maximum likelihood and weighted least squares problems, the Gauss-Newton algorithm represents an attractive alternative for at least some covariance structure analyses.

Information

Type
Original Paper
Copyright
Copyright © 1979 The Psychometric Society

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