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Convergence acceleration of preconditioned conjugate gradient solver based on error vector sampling for a sequence of linear systems.

Takeshi IwashitaKota IkeharaTakeshi FukayaTakeshi Mifune
Published in: Numer. Linear Algebra Appl. (2023)
Keyphrases
  • linear systems
  • preconditioned conjugate gradient
  • sufficient conditions
  • dynamical systems
  • convergence rate
  • coefficient matrix
  • feature vectors
  • sparse linear systems
  • vector space
  • random sampling
  • sample size