A Gauss-Newton method for convex composite optimization

A Gauss-Newton method for convex composite optimization

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Article ID: iaor19971065
Country: Netherlands
Volume: 71
Issue: 2
Start Page Number: 179
End Page Number: 194
Publication Date: Dec 1995
Journal: Mathematical Programming (Series A)
Authors: ,
Abstract:

An extension of the Gauss-Newton method for nonlinear equations to convex composite optimization is described and analyzed. Local quadratic convergence is established for the minimization of hℝoslash;F under two conditions, namely h has a set of weak sharp minima, C, and there is a regular point of the inclusion F(x)∈C. This result extends a similar convergence result due to Womersley which employs the assumption of a strongly unique solution of the composite function hℝoslash;F. A backtracking line-search is proposed as a globalization strategy. For this algorithm, a global convergence result is established, with a quadratic rate under the regularity assumption.

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