Questions tagged [variable-selection]
35 questions
0
votes
2 answers
R: remove/drop multi-collinear variables, based on a output of multi-collinearity test output
I have a dataset of 32 variables and 48 observations (observations would increase, as we are in the phase of data collection thru subscriptions).
Since the dataset has high multicollinearity, I introduced Farrar – Glauber Test. The individual…
Arun
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- 8
0
votes
1 answer
Automated variable selection method
I have a disease dataset, for this dataset. disease_rate is the dependant variable, and the rest independents.
data <- read.csv("H:/uni/MS_DS/disease.csv")
data
> data
radius texture perimeter area smoothness desease_rate
1 …
Prad
- 339
- 1
- 10
0
votes
1 answer
Step function for variable selection is not working
I am trying to do a variable selection using the step() function in R. But it keep getting an error.
Then I found out that now there is no basic step() function like previously. There is a step function in the lmerTest package for mixed models.…
student_R123
- 962
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Function for variable selection
I want define a function for variable selection
Var_Selection = function(data, target){
target = as.character(target)
form = paste(target, '~ ')
vect = c()
valid.names <- names(data)[names(data) != "target"]
myAIC = data.frame(var =…
Naï
- 53
- 6
-1
votes
1 answer
Stepwise AIC using forward selection in R
I am trying to do a forward variable selection using stepwise AIC in R but I don't think that I am getting the desired results. Specifically, the function should start with no variables and keep adding variables and get their AIC values. However,…
yash471994
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