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Questions - gam

Why are the results of the gamm4 function of the gamm4 package different from the standard error displayed by $mer and $gam?

id:268levels group:10levels I used the gamm4 function of the package gamm4 to fit the following model. gamm4_1 <- gamm4(y~z1+z2+z3+age+height+time+bmi,random=~(1|id)+(1|group),data=data,family=bino...
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thi

r

lme4

gam

mgcv

Votes: 0

Answers: 0

R GAM producing different results via group argument

I have some hourly data over 24 hrs across a year, by 7 groups. When I fit a gam (mgcv::gam) I use the by= argument to produce 7 different fitted lines - it produces some odd looking fits. However whe...
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Sam

r

model

gam

trend

Votes: 0

Answers: 1

Latest Answer

From the documentation for the s function in mgcv: In the factor by variable case a replicate of the smooth is produced for each factor level (these smooths will be centered, so the factor usually ne...
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ulfelder

mgcv::k.check equivalent for GAM in brms

I am doing HGAM with the brm function (brms package). For now, I kept the default k = 10, but I want to know if I should set k higher. I know that the function k.check in the mgcv package does that di...
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Julien Beaulieu

r

gam

mgcv

brms

Votes: 0

Answers: 0

Error while predicting a GAM model using tidymodels

WHAT I WANT: I'm trying to fit a GAM model for classification using tidymodels on a given data. SO FAR: I'm able to fit a logit model. library(tidymodels) #> Registered S3 method overwritten by 'tu...
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Tito Sanz

r

gam

tidymodels

Votes: 0

Answers: 1

Latest Answer

This problem has been fixed in the developmental version of {parsnip} (>0.1.7). You can install it by running remotes::install_github("tidymodels/parsnip"). library(parsnip) library(rsamp...
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EmilHvitfeldt

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