All

What are you looking for?

All
Projects
Results
Organizations

Quick search

  • Projects supported by TA ČR
  • Excellent projects
  • Projects with the highest public support
  • Current projects

Smart search

  • That is how I find a specific +word
  • That is how I leave the -word out of the results
  • “That is how I can find the whole phrase”

On the solution of large-scale SDP problems by the modified barrier method using iterative solvers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985556%3A_____%2F07%3A00322640" target="_blank" >RIV/67985556:_____/07:00322640 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    On the solution of large-scale SDP problems by the modified barrier method using iterative solvers

  • Original language description

    The limiting factors of second-order methods for large-scale semidefinite optimization are the storage and factorization of the Newton matrix. For a particular algorithm based on the modified barrier method, we propose to use iterative solvers instead ofthe routinely used direct factorization techniques. The preconditioned conjugate gradient method proves to be a viable alternative for problems with a large number of variables and modest size of the constrained matrix. We further propose to avoid explicit calculation of the Newton matrix either by an implicit scheme in the matrix-vector product or using a finite-difference formula. This leads to huge savings in memory requirements and, for certain problems, to further speed-up of the algorithm.

  • Czech name

    Řešení rozsáhlých SDP problémů modifikovanou metodou bariér za použití iterativních výpočetních zařízení

  • Czech description

    Limitováné faktorý druhotných metod pro rozsáhlé semidifinitní optimalizace jsou uložené a faktorizovány v Newtonově matici. Pro praktický algoritmus založený na modifikované metodě bariér jsme nuceni použít iterativních výpočetních zařítení, používanýchpro přímé faktorizování techniky.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/IAA1075402" target="_blank" >IAA1075402: Variational analysis in nonsmooth problems of mathematical physics</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Mathematical Programming

  • ISSN

    0025-5610

  • e-ISSN

  • Volume of the periodical

    109

  • Issue of the periodical within the volume

    2-3

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    32

  • Pages from-to

  • UT code for WoS article

    000243908500010

  • EID of the result in the Scopus database