REmrt_GS_ function

A function to fit the tree with look-ahead option

REmrt_GS_(mf, maxL, minbucket, minsplit, cp, lookahead)

Arguments

• mf: the data.frame to grow the tree
• maxL: the maximum number of splits
• minbucket: the minimum number of the studies in a terminal node
• minsplit: the minimal number of studies in a parent node to be split
• cp: the stopping rule for decrease of between-subgroups Q. Any split that does not decrease the between-subgroups Q is not attempted.
• lookahead: an argument indicating whether to apply the "look-ahead" strategy when fitting the tree

Returns

a list including a tree, the split points, the data, and the nodes after each split