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Mathematics of Computation
Mathematics of Computation
ISSN 1088-6842(online) ISSN 0025-5718(print)


A characterization of superlinear convergence and its application to quasi-Newton methods

Authors: J. E. Dennis and Jorge J. Moré
Journal: Math. Comp. 28 (1974), 549-560
MSC: Primary 65H05
MathSciNet review: 0343581
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Abstract | References | Similar Articles | Additional Information

Abstract: Let F be a mapping from real n-dimensional Euclidean space into itself. Most practical algorithms for finding a zero of F are of the form

$\displaystyle {x_{k + 1}} = {x_k} - B_k^{ - 1}F{x_k},$

where $ \{ {B_k}\} $ is a sequence of nonsingular matrices. The main result of this paper is a characterization theorem for the superlinear convergence to a zero of F of sequences of the above form. This result is then used to give a unified treatment of the results on the superlinear convergence of the Davidon-Fletcher-Powell method obtained by Powell for the case in which exact line searches are used, and by Broyden, Dennis, and Moré for the case without line searches. As a by-product, several results on the asymptotic behavior of the sequence $ \{ {B_k}\} $ are obtained.

An interesting aspect of these results is that superlinear convergence is obtained without any consistency conditions; i.e., without requiring that the sequence $ \{ {B_k}\} $ converge to the Jacobian matrix of F at the zero. In fact, a modification of an example due to Powell shows that most of the known quasi-Newton methods are not, in general, consistent. Finally, it is pointed out that the above-mentioned characterization theorem applies to other single and double rank quasi-Newton methods, and that the results of this paper can be used to obtain their superlinear convergence.

References [Enhancements On Off] (What's this?)

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Additional Information

PII: S 0025-5718(1974)0343581-1
Keywords: Quasi-Newton methods, variable metric methods, superlinear convergence, iterative methods for nonlinear equations
Article copyright: © Copyright 1974 American Mathematical Society

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