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Results tagged with numerical-linear-algebra
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user 9022
{numerical-linear-algebra} questions involving algorithms for linear algebra computations.
1
vote
Accepted
Large scale least squares of non symmetric and non square problems
A widely used iterative method for large scale linear least squares problems that allows for regularization if you want/need it is the LSQR algorithm of Paige and Saunders. See
http://www.stanford.ed …
- 3,934
3
votes
Accepted
Decompositions of sparse symmetric matrices and methods for solving large linear equations
I agree that this is a better question for scicomp.stackexchange.com.
Maybe. It depends on the sparsity structure of your particular matrix and the actual numerical values of the nonzero elements …
- 3,934
1
vote
Ease of calculation of norm
I'm assuming that by $\| A^{1/2}b-z \|$, you're referring to the 2-norm and that by $A^{1/2}$, you're referring to the unique symmetric matrix square root of $A$.
If you can precompute $A^{1/2}z$, …
- 3,934