Re: [R] glmmLasso with interactions errors

2016-07-16 Thread David Winsemius
> On Jul 16, 2016, at 11:26 AM, Walker Pedersen wrote: > > Hi, > > Thanks for the response. > > The warnings and errors can be reproduced with the data and code I > included in my first mailing list post. I will provide the full output > at the end of this post. > I get: > glm2 <- glmmLasso

Re: [R] glmmLasso with interactions errors

2016-07-16 Thread Walker Pedersen
Hi, Thanks for the response. The warnings and errors can be reproduced with the data and code I included in my first mailing list post. I will provide the full output at the end of this post. By sketchy, I mean having a higher likelihood of resulting in overfitting. By more straightforward, I m

Re: [R] glmmLasso with interactions errors

2016-07-16 Thread David Winsemius
> On Jul 16, 2016, at 9:29 AM, Walker Pedersen wrote: > > Thank you for the input Brian and Ben. > > It is odd how it seems to handle a two way interaction fine (as long > as the continuous variable is not in the mix), but not a 3-way. You should post code and data to demonstrate what is "not

Re: [R] glmmLasso with interactions errors

2016-07-16 Thread Walker Pedersen
Thank you for the input Brian and Ben. It is odd how it seems to handle a two way interaction fine (as long as the continuous variable is not in the mix), but not a 3-way. In any case would anyone be able to give me a rundown of how I would create a matrix/dummy variable for these interactions to

Re: [R] glmmLasso with interactions errors

2016-07-15 Thread Ben Bolker
Cade, Brian usgs.gov> writes: > > It has never been obvious to me that the lasso approach can handle > interactions among predictor variables well at all. > I'ld be curious to see > what others think and what you learn. > > Brian > For what it's worth I think lasso *does* handle interactio

Re: [R] glmmLasso with interactions errors

2016-07-14 Thread Cade, Brian
It has never been obvious to me that the lasso approach can handle interactions among predictor variables well at all. I'ld be curious to see what others think and what you learn. Brian Brian S. Cade, PhD U. S. Geological Survey Fort Collins Science Center 2150 Centre Ave., Bldg. C Fort Collins

[R] glmmLasso with interactions errors

2016-07-13 Thread Walker Pedersen
Hi Everyone, I am having trouble running glmmLasso. An abbreviated version of my dataset is here: https://drive.google.com/open?id=0B_LliPDGUoZbVVFQS2VOV3hGN3c Activity is a measure of brain activity, Novelty and Valence are categorical variables coding the type of stimulus used to elicit the r