When working with caret, how can I save a model after training, and load it later (e.g. in a different session) for prediction?
A better solution nowadays is to use saveRDS to save and readRDS to read:
saveRDS(model, "model.rds")
my_model <- readRDS("model.rds")
This lets you to choose a new name for the object (you don't need to remember the name you used when you saved it)