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Asynchronous distributed solution of large scale nonlinear inversion problems

✍ Scribed by V. Pereyra

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 93 KB
Volume: 30
Category: Article
ISSN: 0168-9274
DOI: 10.1016/s0168-9274(98)00082-8

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✦ Synopsis

In this paper we consider large scale nonlinear least squares problems whose objective functions are very expensive to evaluate, and whose Jacobian matrices are generally ill-conditioned and have an almost block diagonal structure. We prove the convergence of an asynchronous iteration to solve this kind of problems under standard assumptions. The method is naturally parallelizable and thus is applicable to practical inversion problems, as those arising in seismic exploration for hydrocarbons.

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