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Open Access Publications from the University of California

Estimates of Optimal Backward Perturbations for Linear Least Squares Problems

  • Author(s): Grcar, Joseph F.
  • Saunders, M.A.
  • Su, Zheng
  • et al.

Numerical tests are used to validate a practical estimate for the optimal backward errors of linear least squares problems. This solves a thirty-year-old problem suggested by Stewart and Wilkinson.

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