Displaying 4 results from an estimated 4 matches for "optimmethod".
2006 Aug 04
1
gnlsControl
...nlsMaxIter = 7, msMaxIter = 50, minScale = 0.001,
tolerance = 1e-06, nlsTol = 0.001, msTol = 1e-07, msScale = lmeScale,
returnObject = FALSE, msVerbose = FALSE, apVar = TRUE, .relStep =
(.Machine$double.eps)^(1/3),
nlmStepMax = 100, opt = c("nlminb", "optim"), optimMethod = "BFGS",
minAbsParApVar = 0.05)
{
list(maxIter = maxIter, nlsMaxIter = nlsMaxIter, msMaxIter = msMaxIter,
minScale = minScale, tolerance = tolerance, nlsTol = nlsTol,
msTol = msTol, msScale = msScale, returnObject = returnObject,
msVerbose = msV...
2006 Jan 31
1
lme in R (WinXP) vs. Splus (HP UNIX)
...is my R code and output, with some columns
and rows deleted for space considerations:
FOO.lme1 <- lme(fixed = Y ~ X1*X2,
random = ~ X2 | X3, data = FOO,
method = "REML",
control = list(maxIter = 200, msMaxIter = 200,
tolerance = 1e-8, niterEM = 200,
msTol = 1e-8, msVerbose = TRUE,
optimMethod = "Nelder-Mead"))
0 203.991: 0.924323 -0.0884338 0.493897
1 203.991: 0.924323 -0.0884338 0.493897
> summary(FOO.lme1)
Linear mixed-effects model fit by REML
Data: FOO
AIC BIC logLik
357.484 373.6868 -170.7420
Random effects:
Formula: ~ X2 | X3
Struc...
2006 Feb 15
1
no convergence using lme
...efaults..
lmeControl
function (maxIter = 50, msMaxIter = 50, tolerance = 1e-06, niterEM = 25,
msTol = 1e-07, msScale = lmeScale, msVerbose = FALSE, returnObject =
FALSE,
gradHess = TRUE, apVar = TRUE, .relStep = (.Machine$double.eps)^(1/3),
minAbsParApVar = 0.05, nlmStepMax = 100, optimMethod = "BFGS",
natural = TRUE)
I was reading on the R listserve that lmer from the lme4 package may be
preferable to lme (for convergence problems) but lmer seems to need you to
put in starting values and I'm not sure how to go about chosing them. I was
wondering if anyone had e...
2006 Jul 23
1
How to pass eval.max from lme() to nlminb?
Dear R community,
I'm fitting a complex mixed-effects model that requires numerous
iterations and function evaluations. I note that nlminb accepts a
list of control parameters, including eval.max. Is there a way to
change the default eval.max value for nlminb when it is being called
from lme?
Thanks for any thoughts,
Andrew
--
Andrew Robinson
Department of Mathematics and Statistics