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cobb2
2006 Oct 06
1
Nonlinear mixed effects model
...ulation of
the covariance matrix (you can only specify a "type", and our "type" doesn't
exist). Can R accomplish this? For example:
Parameters:
B1= Beta 1i
B2= Beta 2i
G1= Gamma i
y = B1 -(B1 - B2) exp { - G1 time} + e
the covariance matrix for
(B1 [( covB1? covB1B2 covB1G1
B2 ~ covB2B1 covB2? covB2G1
G1) covG1B1 covG1B2 covG1? )]
**If we want to specify covG1B1 and make everything else 0's, for example,
what would the code look like?
Thanks for your time.
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