search for: marquard

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2006 May 24
1
general Gauss-Newton or support for NSUR: contemporaneously correlated non-linear models
Dear r-Help readers, 1) Is there support for NSUR in some R package yet? 2) Is there a general function of applying the Gauss-Newton or Marquard method, in which the function of calculating the partial derivatives can be specified by the user? Contemporaneously correlated non-linear models (NSUR) is a method to fit a system of non-linear equations. I want to use to fit several non-linear models at the same time, so that one the indepe...