Abstract
In this paper, we revisit the convergence properties of the iterationprocess xk+1=xk−α(xk)B(xk)−1∇f(xk)for minimizing a function f(x). After reviewing some classic results andintroducing the notion of strong attraction, we give necessary andsufficient conditions for a stationary point of f(x) to be a point of strongattraction for the iteration process. Not only this result gives a newalgorithmic interpretation to the classic Ostrowski theorem, but alsoprovides insight into the interesting phenomenon called selectiveminimization. We present also illustrative numerical examples for nonlinearleast squares problems.
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Zhang, Y., Tapia, R. & Velazquez, L. On Convergence of Minimization Methods: Attraction, Repulsion, and Selection. Journal of Optimization Theory and Applications 107, 529–546 (2000). https://doi.org/10.1023/A:1026443131121
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DOI: https://doi.org/10.1023/A:1026443131121