Last modified: December 2013

URL: http://cxc.harvard.edu/sherpa/ahelp/levmar.html
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AHELP for CIAO 4.11 Sherpa v1

levmar

Context: methods

Synopsis

Levenberg-Marquardt optimization method

Description

The Levenberg-Marquardt method is an interface to the MINPACK subroutine lmdif to find the local minimum of nonlinear least squares functions of several variables by a modification of the Levenberg-Marquardt algorithm (J.J. More, "The Levenberg Marquardt algorithm: implementation and theory," in Lecture Notes in Mathematics 630: Numerical Analysis, G.A. Watson (Ed.), Springer-Verlag: Berlin, 1978, pp.105-116).

Method Options


Example

sherpa> set_method("levmar")
sherpa> get_method_name()
'levmar'

Set the optimization method and then confirm the new value.


Bugs

See the bugs pages on the Sherpa website for an up-to-date listing of known bugs.

See Also

methods
gridsearch, list_iter_methods, list_methods, moncar, neldermead, set_method, set_method_opt
statistics
set_sampler_opt