Tree-prior parameters, the keys of R’s tree_list.
The prior probability of splitting a node at depth d is
prior_alpha * (1 + d) ** -prior_beta. Entries left out fall back to
tree_list’s own defaults, noted below.
-
prior_alpha: float
Base of the node-splitting probability, in (0, 1). Default 0.95.
-
prior_beta: float
Power of the node-splitting probability, nonnegative. Default 2.
-
min_node: int
Minimum number of observations per leaf, raised to p + 1 internally. Default 1.
-
max_attempt: int
Number of attempts to propose a valid split before giving up. Default 1.