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[x,flag,iter,Miter,QLPiter,re... MINRESQLP: min-length solution to symmetric (possibly singular) Ax=b or min||Ax-b||.
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MINRES-QLP

28 Jun 2013

Computing min-length (pseudoinverse) solution to symmetric (possibly singular) Ax=b or min||Ax-b||.

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Description	REFERENCES: Sou-Cheng T. Choi and Michael A. Saunders, ALGORITHM: MINRES-QLP for Singular Symmetric and Hermitian Linear Equations and Least-Squares Problems, to appear in ACM Transactions on Mathematical Software. Sou-Cheng T. Choi, Christopher C. Paige, and Michael A. Saunders, MINRES-QLP: A Krylov Subspace Method for Indefinite or Singular Symmetric Systems, SIAM Journal on Scientific Computing, Vol. 33, No. 4, August 2011, pp. 1810--1836. Sou-Cheng T. Choi's PhD Dissertation, Stanford University, 2006: http://www.stanford.edu/group/SOL/dissertations.html CURRENT / FUTURE RELEASES of minresqlp: Version 2: http://code.google.com/p/minres-qlp/ http://www.mathworks.com/matlabcentral/fileexchange Version 1: http://code.google.com/p/minres-qlp/ http://www.stanford.edu/group/SOL/download.html Other implementations in Fortran 90/95, Python: http://code.google.com/p/minres-qlp/
Required Products	MATLAB
MATLAB release	MATLAB 7.12 (R2011a)

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Everyone's Tags	algorithm, hermitian linear systems, linear leastsquares problems, preconditioner, singular, symmetric
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