Abstract
This paper studies the speed of convergence of a general algorithm for function minimization without calculating derivatives. This algorithm contains Powell's 1964 algorithm as well as Zangwill's second modification of this procedure. The main results are Theorems 3.1 and 4.1 which show that, if the algorithm behaves well, then asymptotically almost conjugate directions are built; therefore, the algorithm has an every-iteration superlinear speed of convergence. The paper hinges on ideas of McCormick and Ritter and Powell.
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References
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Communicated by P. Varaiya
The authors wish to thank the Namur Department of Mathematics, especially its optimization group, for many discussions and encouragements. The authors also thank the reviewer for many helpful suggestions.
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Toint, P.L., Callier, F.M. On the accelerating property of an algorithm for function minimization without calculating derivatives. J Optim Theory Appl 23, 531–547 (1977). https://doi.org/10.1007/BF00933295
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DOI: https://doi.org/10.1007/BF00933295