Displaying 2 results from an estimated 2 matches for "theta8".
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2006 Apr 01
1
Nested error structure in nonlinear model
I am trying to fit a nonlinear regression model to data. There are
several predictor variables and 8 parameters. I will write the model as
Y ~ Yhat(theta1,...,theta8)
OK, I can do this using nls() - but "only just" as there are not as many
observations as might be desired.
Now the problem is that we have a factor "Site" and I want to include a
corresponding error component. I tried something like (excuse the
doctored R output):
> m...
2007 Jun 27
1
SEM model fit
...-> acon, NA, 1
con -> mcon, lam7, 0.8
con -> ocon, lam8, 0.9
con <-> con, psi5, 0.3
acon1 <-> acon1, theta7, 0.4
acon2 <-> acon2, theta8, 0.2
mvcon1 <-> mvcon1, theta9, 0.2
mvcon2 <-> mvcon2, theta10, 0.3
oicon1 <-> oicon1, theta11, 0.2
oicon2 <-> oicon2, theta12, 0.3
gender -> con, a5, 0.1
incomex...