The predicted probability for that node of the tree. The method for calculating Prob for the ith response level at a given node is as follows:

Probi =

where the summation is across all response levels; ni is the number of observations at the node for the ith response level; and priori is the prior probability for the ith response level, calculated as:

where pi is the priori from the parent node, Pi is the Probi from the parent node, and λ is a weighting factor currently set at 0.9.