期刊
NUMERICAL FUNCTIONAL ANALYSIS AND OPTIMIZATION
卷 42, 期 2, 页码 132-154出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01630563.2020.1870134
关键词
Model reduction; shape calculus; shape gradient; shape Hessian; low-rank approximation; power iteration
The study examines scalar-valued shape functionals on sets of shapes that are small perturbations of a reference shape. The shapes are described by parameterizations and their closeness is measured by a Hilbert space structure on the parameter domain. The study justifies a heuristic for finding the best low-dimensional parameter subspace and proposes an adaptive algorithm for achieving a prescribed accuracy when representing the shape functional with a small number of shape parameters.
We consider scalar-valued shape functionals on sets of shapes which are small perturbations of a reference shape. The shapes are described by parameterizations and their closeness is induced by a Hilbert space structure on the parameter domain. We justify a heuristic for finding the best low-dimensional parameter subspace with respect to uniformly approximating a given shape functional. We also propose an adaptive algorithm for achieving a prescribed accuracy when representing the shape functional with a small number of shape parameters.
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