MIQR: A multilevel incomplete QR preconditioner for large sparse least-squares problems

SIAM Journal on Matrix Analysis and Applications

Volumn 28, Issue 2, 2006, Pages 524-550

  Na, Li ^a   Saad, Yousef ^a  

^a University of Minnesota   (United States)

Author keywords

CGLS; Incomplete QR; Iterative mothods; Large least squares problems; Multilevel incomplete QR factorization; Normal equations; Orthogonal factorization; Preconditioning; QR factorization

Indexed keywords

CGLS; INCOMPLETE QR; MULTILEVEL INCOMPLETE QR FACTORIZATION; NORMAL EQUATIONS; ORTHOGONAL FACTORIZATION; PRECONDITIONING; QR FACTORIZATION; SPARSITY;

ALGORITHMS; COMPUTATIONAL COMPLEXITY; ITERATIVE METHODS; LEAST SQUARES APPROXIMATIONS; MATRIX ALGEBRA;

PROBLEM SOLVING;

EID: 34247388040     PISSN: 08954798     EISSN: 10957162     Source Type: Journal    
DOI: 10.1137/050633032     Document Type: Article

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