Classification and regression trees
GUIDE and CRUISE use chi squared tests, and QUEST uses chi squared tests for unordered variables and analysis of variance (ANOVA) tests for ordered variables. CTree,14 an-other unbiased method, uses permutation tests. Pseu-docode for the GUIDE algorithm is given in Algo-rithm 2. The CRUISE, GUIDE, and QUEST trees are pruned the same way as CART.
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