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2017 Nov 24
0
Using bartMachine with the caret package
Dave Langer in this video https://www.youtube.com/watch?v=z8PRU46I3NY
uses the titanic data as an example of using caret to create xgbTree
models. The caret train() function has a tuneGrid parameter which
takes a list set up like so:
tune.grid <- expand.grid(eta = c(0.05, 0.075, 0.1),
nrounds = c(50, 75, 100),
max_depth = 6:8,
min_child_weight = c(2, 2.25,...