A multilevel block incomplete Cholesky preconditioner for solving normal equations in linear least squares problems
DOI10.1007/BF02935723zbMath1018.65055OpenAlexW2128924845MaRDI QIDQ1871426
Publication date: 11 September 2003
Published in: Journal of Applied Mathematics and Computing (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1007/bf02935723
numerical experimentspreconditioningconjugate gradient methodnormal equationincomplete Cholesky factorizationlinear least squares problemsapproximate Schur complement matrixlarge sparse rectangular matrix
Computational methods for sparse matrices (65F50) Numerical solutions to overdetermined systems, pseudoinverses (65F20) Iterative numerical methods for linear systems (65F10) Numerical computation of matrix norms, conditioning, scaling (65F35)
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