Projects per year
Abstract
The worst-case behaviour of a general class of regularization algorithms is considered in the case where only objective function values and associated gradient vectors are evaluated. Upper bounds are derived on the number of such evaluations that are needed for the algorithm to produce an approximate first-order critical point whose accuracy is within a user-defined threshold. The analysis covers the entire range of meaningful powers in the regularization term as well as in the Hölder exponent for the gradient. The resulting complexity bounds vary according to the regularization power and the assumed Hölder exponent, recovering known results when available.
Original language | English |
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Pages (from-to) | 1273-1298 |
Number of pages | 26 |
Journal | Optimization Methods and Software |
Volume | 32 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2 Nov 2017 |
Keywords
- optimization
- worst-case analysis
- complexity theory
- nonlinear optimisation
- regularization methods
- complexity analysis
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Projects
- 2 Active
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Complexity in nonlinear optimization
TOINT, P., Gould, N. I. M. & Cartis, C.
1/11/08 → …
Project: Research
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Activities
- 2 Invited talk
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A path and some adventures in the jungle of high-order nonlinear optimization
Philippe Toint (Speaker)
23 Oct 2017Activity: Talk or presentation types › Invited talk
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A path and some adventures in the jungle of high-order nonlinear optimization
Philippe Toint (Speaker)
24 Oct 2017Activity: Talk or presentation types › Invited talk