Help with LeastSquares (v. 6)
- To: mathgroup at smc.vnet.net
- Subject: [mg91014] Help with LeastSquares (v. 6)
- From: "Hoa Bui" <hoabui05 at gmail.com>
- Date: Sun, 3 Aug 2008 05:33:51 -0400 (EDT)
Howdy, Anyone know about what algorithm is used by LeastSquares, please help me? I know there is the option Method->"Direct" or "IterativeRefinement", but I do not know what exactly is used by these methods. For example, does Method->"IterativeRefinement" use the damped least-square pseudo-inverse (i.e. Levenberg-Marquardt ?), or does it use one of the decomposition methods for solving linear systems of equations, etc... ? Where would I be able to get a more detailed description? Thanks so much, ~Hoa Bui