October 2017
Beginner to intermediate
572 pages
26h 1m
English
book
Machine Learning with R Cookbook - Second Edition
by AshishSingh Bhatia, Yu-Wei, Chiu (David Chiu)
Content preview from Machine Learning with R Cookbook - Second Edition
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How to do it...
Perform the following steps to rank the variable importance with rminer:
- Install and load the package, rminer:
> install.packages("rminer")
> library(rminer)
- Fit the svm model with the training set:
> model=fit(churn~.,trainset,model="svm")
- Use the Importance function to obtain the variable importance:
> VariableImportance=Importance(model,trainset,method="sensv")
- Plot the variable importance ranked by the variance:
> L=list(runs=1,sen=t(VariableImportance$imp),sresponses= VariableImportance$sresponses)
> mgraph(L,graph="IMP",leg=names(trainset),col="gray",Grid=10)
The visualization of variable importance using ...
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