confusion matrix of bstTree predictions, Error: 'The data must contain some levels that overlap the reference.'?

I am trying to train a model using bstTree method and print out the confusion matrix. adverse_effects is my class at...

error : argument “x” is missing, with no default??

As im very new to XGBoost, I am trying to tune the parameters using mlr library and model but after using setHayperP...

Error in ConfusionMatrix the data and reference factors must have the same number of levels?

I've trained a tree model with R caret. I'm now trying to generate a confusion matrix and keep getting the following...

R package caret confusionMatrix with missing categories?

I am using the function confusionMatrix in the R package caret to calculate some statistics for some data I have. I...

Using Caret Package but Getting Error in library(e1071)?

Here are my codes, pretty standard but I am getting the error msg: library(caret) set.seed(32343) modelFit = train(...

The train function in R caret package?

Suppose I have a data set and I want to do a 4-fold cross validation using logistic regression. So there will be 4 d...

Applying k-fold Cross Validation model using caret package?

Let me start by saying that I have read many posts on Cross Validation and it seems there is much confusion out ther...

Creating data partition in R?

With caret package, when creating data partition 75% training and 25% test, we use: inTrain<- createDataPartitio...

Logistic Regression Tuning Parameter Grid in R Caret Package??

I am trying to fit a logistic regression model in R using the caret package. I have done the following: model <-...

How does createDataPartition function from caret package split data??

From the documentation: For bootstrap samples, simple random sampling is used. For other data splitting, the random...