I have have already posted the following question:  What numerical methods
are used in nlme to estimate correlation parameters?
I was referred to the Pinheiro and Bates book.  Unfortunately, on p. 202,
section 5.1.1, under the title "Estimation and Computational Methods", no
description on a numerical method is provided.  (When the data is
transformed to work with the profiled likelihood(y->ystar), one needs the
parameters that define Lambda.  How are these parameters estimated?)

Any help is always appreciated,

Harlan

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