Proc MIXED - start value [Software]

posted by d_labes  – Berlin, Germany, 2014-10-10 10:35 (4277 d 15:25 ago) – Posting: # 13684
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Dear Yung-jin, dear ElMaestro,

❝ Exactly. No starting value can be set up with either PROC MIXED of SAS or lme() from package nlme of R. ...


Objection, Your Honor! At least for SAS.
Just to cite from the SAS Help page of Proc MIXED:
"PARMS Statement

PARMS (value-list) ...</ options> ;

The PARMS statement specifies initial values for the covariance parameters, or it requests a grid search over several values of these parameters. ..."

For R I bet there is also some possibility. But don't know exactly.
Eventually the function nlme() is what you need.

Regards,

Detlew

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