Displaying 2 results from an estimated 2 matches for "obsdata".
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bsdata
2011 Sep 01
2
how to plot a series of data in a dataframe?
hi
i have a dataframe with the name "obsdata"
V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12 V13
1 1001 3 24 12 24.7 44.4 70.1 49.3 33.7 3.0 6.8 2.7 NA
2 1001 3 25 0 70.1 49.3 33.7 138.2 152.5 NA 4.2 6.9 17.5
3 1001 3 25 12 33.7 187.7 286.5 386.7 NA 16.2 46.0 48.8 43...
2018 Apr 04
1
parfm unable to fit models when hazard rate is small
...e survival data (without any random effects), and analyse the data using the parfm package. I am using an exponential baseline hazard. When the baseline hazard rate drops to 0.001, I get the following error when trying to fit the model:
Error in optimHess(par = ESTIMATE, fn = Mloglikelihood, obs = obsdata, :
non-finite finite-difference value [1]
In addition: Warning message:
In log(pars) : NaNs produced
Has anybody else come across this issue, or could suggest why parfm struggles with low event rates? Or could someone please run my code to see if they get the same issue? Full reproducible code...