Abstract
A convergent minimization algorithm made up of repetitive line searches is considered in ℝn. It is shown that the uniform nonsingularity of the matrices consisting ofn successive normalized search directions guarantees a speed of convergence which is at leastn-step Q-linear. Consequences are given for multistep methods, including Powell's 1964 procedure for function minimization without calculating derivatives as well as Zangwill's modifications of this procedure.
Similar content being viewed by others
References
Ostrowski, A.,Contribution to the Theory of Steepest Descent, Archive for Rational Mechanics, Vol. 26, pp. 257–280, 1967.
Ortega, J. M., andRheinboldt, W. C.,Iterative Solution of Nonlinear Equations in Several Variables, Academic Press, New York, New York, 1970.
Tornheim, L.,Convergence of Multipoint Iterative Methods, Journal of the ACM, Vol. 11, pp. 210–220, 1964.
Schuller, G.,On the Order of Convergence of Certain Quasi-Newton Methods, Numerische Mathematik, Vol. 23, pp. 181–192, 1974.
Powell, M. J. D.,An Efficient Method for Finding the Minimum of a Function of Several Variables without Calculating Derivatives, Computer Journal, Vol. 7, pp. 155–162, 1964.
Zangwill, W. I.,Minimizing a Function without Calculating Derivatives, Computer Journal, Vol. 10, pp. 293–296, 1967.
Polak, E. L.,Computational Methods in Optimization, Academic Press, New York, New York, 1971.
Toint, P. L., andCallier, F. M.,On the Accelerating Property of an Algorithm for Function Minimization without Calculating Derivatives, Journal of Optimization Theory and Applications, Vol. 23, No. 4, 1977.
Vainberg, M. M.,Variational Methods for the Study of Nonlinear Operators, Holden-Day, San Francisco, California, 1964.
Author information
Authors and Affiliations
Additional information
Communicated by P. Varaiya
The authors wish to thank the Namur Department of Mathematics, especially its optimization group, for many discussions and encouragement. They also thank the reviewers for many helpful suggestions.
Rights and permissions
About this article
Cite this article
Toint, P.L., Callier, F.M. On the uniform nonsingularity of matrices of search directions and the rate of convergence in minimization algorithms. J Optim Theory Appl 23, 511–529 (1977). https://doi.org/10.1007/BF00933294
Issue Date:
DOI: https://doi.org/10.1007/BF00933294