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Tytuł: Some variant sof projection methods for large nonlinear optimization problems, Journal of Telecommunications and Information Technology, 2003, nr 3

Autor:

Białoń, Paweł

Data wydania:

2003, nr 3

Typ zasobu:

artykuł

Opis:

Two ideas of modifying projection methods for the case of smooth nonlinear optimization are presented. Projection methods were originally successfully used in solving largescale linear feasibility problems. The proposed instantiations of projection methods fall into two groups. One of them is a decomposition approach in which projections onto sets are realized as optimization problems which themselves involve much portions of original problem constraints. There are two subproblems: one build with linear constraints of the original problem and the second one build with original nonlinear constraints. These approaches use special accelerating cuts so that the separation of nonlinear and linear constraints can be effective and some problem sparsity preserved. The second group bases on penalty-shifting/multiplier methods and draws from the observation that unconstrained subproblems obtained there may solve very slowly due to their nonsmooth character. Thus it is proposed to solve them with modified projection methods which inherit from conjugate gradient methodsa multi-dimensional subspace in one epoche.

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy, Warszawa

Format:

application/pdf

Identyfikator zasobu:

oai:bc.itl.waw.pl:605 ; ISSN 1509-4553, on-line: ISSN 1899-8852

DOI:

10.26636/jtit.2003.3.192

ISSN:

1509-4553

eISSN:

1899-8852

Źródło:

Journal of Telecommunications and Information Technology

Język:

ang

Prawa:

Biblioteka Naukowa Instytutu Łączności

Temat i słowa kluczowe:

penalty shifting method projection methods non-linear optimization

Kolekcje, do których przypisany jest obiekt:

Data ostatniej modyfikacji:

29 maj 2024

Data dodania obiektu:

22 mar 2010

Liczba wyświetleń treści obiektu:

146

Wszystkie dostępne wersje tego obiektu:

https://bc.itl.waw.pl/publication/674

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Nazwa wydania Data
Białoń, Paweł, Some variant sof projection methods for large nonlinear optimization problems, Journal of Telecommunications and Information Technology, 2003, nr 3 29 maj 2024

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Instytut Łączności – Państwowy Instytut Badawczy ul. Szachowa 1 04-894 Warszawa

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(+48) 5128 696

E-Mail

biblioteka@il-pib.pl

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