[R-sig-eco] K-fold validation for glmer model

[basille.web at ase-research.org]

Dear Samhita,

I wrote a function that does exactly this: kfold for LMER objects (e.g. in
the context of resource selection functions). It is in the 'kfold' branch
(in development) of my package 'hab' [1].

I have to admit it is largely untested, which is why it is not in the
official version... I think it should work though, you may want to give it
a try.

Mathieu.


[1] https://github.com/basille/hab/blob/kfold/R/kfold.r


Le 02/05/2016 21:58, Samhita Bose (SCIFAC-Biological Sciences) a écrit :
> Hi,
> 
> 
> I am trying to see resource selection in black tailed deer across seasons and activity state. I am fairly new to R and have used glmer function from lme4 to fit my data. I have used physical variables  (elevation, aspect and ruggedness) and vegetation classes as fixed effect and individual deer as random effect in my model. Now I want  to validate my model to test the robustness of my assumptions. I have tried using package caret but it is not supporting glmer model. Is there any R code  to conduct a k fold cross validation of a glmer model? Any help will be appreciated.
> 
> 
> Thanks,
> 
> Samhita
> 
> 
> Samhita Bose
> PhD Student
> School of Biological Sciences
> New Kirk Building, Kelburn Parade
> Victoria University of Wellington
> Work:   +64-4-463-8554   Cell:  +64-22-389-3800
> 
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-- 

Mathieu Basille

basille at ufl.edu | http://ase-research.org/basille
+1 954-577-6314 | University of Florida FLREC

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