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https://hdl.handle.net/20.500.14279/2005| Τίτλος: | Efficient algorithms for block downdating of least squares solutions | Συγγραφείς: | Yanev, Petko I. Kontoghiorghes, Erricos John |
metadata.dc.contributor.other: | Κοντογιώργης, Έρρικος Γιάννης | Major Field of Science: | Natural Sciences | Field Category: | Computer and Information Sciences | Λέξεις-κλειδιά: | Least squares;Algorithms;Computational complexity | Ημερομηνία Έκδοσης: | Απρ-2004 | Πηγή: | Applied Numerical Mathematics, 2004, vol. 49, no. 1, pp. 3-15 | Volume: | 49 | Issue: | 1 | Start page: | 3 | End page: | 15 | Περιοδικό: | Applied Numerical Mathematics | Περίληψη: | Five computationally efficient algorithms for block downdating of the least squares solutions are proposed. The algorithms are block versions of Givens rotations strategies and are rich in BLAS-3 operations. They efficiently exploit the triangular structure of the matrices. The theoretical complexities of the algorithms are derived and analyzed. The performance of the implementations confirms the theoretical results. The new strategies are found to outperform existing downdating methods. | URI: | https://hdl.handle.net/20.500.14279/2005 | ISSN: | 01689274 | DOI: | 10.1016/j.apnum.2003.11.009 | Rights: | © Elsevier | Type: | Article | Affiliation: | Université de Neuchâtel | Publication Type: | Peer Reviewed |
| Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
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