I am using the
gbm package and I am using the
gbm.step function. In the
?gbm.step I see
tree.complexity sets the complexity of individual trees. Is this equivalent to the
depth of the tree ?
There is a
vignette by Jane Elith and John Leathwick for GBM's in
dismopackage . The package actually uses
gbm.step implementation from
Vignette referes to
Elith, J., Leathwick, J.R., and Hastie, T. (2008). Boosted regression trees - a new technique for modelling ecological data. Journal of Animal Ecology
This is freely avalaible in the net and says:
Tree complexity (tc) controls whether interactions are fitted: a tc of 1 (single decision stump; two terminal nodes) fits an additive model, a tc of two fits a model with up to two-way interactions, and so on.
So, it seems it is a
depth as you supposed.