Sample Leaf Scale

Sample one iteration of the leaf parameter variance model (only for univariate basis and constant leaf!)

This function is intended for advanced use cases in which users require detailed control of sampling algorithms and data structures. Minimal input validation and error checks are performed – users are responsible for providing the correct inputs. For tutorials on the "proper" usage of the stochtree's advanced workflow, we provide several vignettes at stochtree.ai

Usage

sampleLeafVarianceOneIteration(forest, rng, a, b)

Arguments

forest

C++ forest

rng

C++ random number generator

a

Leaf variance shape parameter

b

Leaf variance scale parameter

Value

None

Examples

num_trees <- 100
leaf_dimension <- 1
is_leaf_constant <- TRUE
is_exponentiated <- FALSE
active_forest <- createForest(num_trees, leaf_dimension, is_leaf_constant, is_exponentiated)
rng <- createCppRNG(1234)
a <- 1.0
b <- 1.0
tau <- sampleLeafVarianceOneIteration(active_forest, rng, a, b)