Displaying 2 results from an estimated 2 matches for "optpar".
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2013 Mar 05
0
Error message from flexsurvreg
...on previous work of
my colleagues on similar projects, am trying to estimate an AFT model with
a generalized gamma distribution. When I execute the following code:
>flexsurvreg(timesurv ~ cycles + rcycle + cyctime, dist="gengamma")
I get the following error message:
Error in optim(optpars, minusloglik.flexsurv, t = Y[, "time"], dead = Y[,
:
non-finite finite-difference value [4]
I get an almost identical error (a 3 in the brackets instead of a 4) if I
use the dist = "weibull". But have no problems when I run survreg with
Weibull distribution on the same dat...
2010 Jul 27
0
AIC from coxme
...: int [1:2] 102 102
.. ..@ Dimnames :List of 2
.. .. ..$ : NULL
.. .. ..$ : NULL
$ iter : num [1:2] 10 54
$ control :List of 6
..$ eps : num 1e-08
..$ toler.chol : num 1.82e-12
..$ iter.max : num 20
..$ inner.iter : num 5
..$ sparse.calc: num 1
..$ optpar :List of 2
.. ..$ method : chr "BFGS"
.. ..$ control:List of 1
.. .. ..$ reltol: num 1e-05
$ u : num [1:102] 2.70e-05 2.02e-05 1.48e-05 -1.61e-05
1.78e-05 ...
$ means : num [1:5] 0.45 0.307 0.444 0.148 0.206
$ scale : num [1:5] 0.495 0.425 0....