Improving PRETREE's predictive capabilities

The PRETREE hierarchical choice model is a direct extension of the Elimination by Aspects model which is applied in capturing violations from assumptions pertaining to the Independence of Irrelevant Alternative (IIA). The application of the PRETREE aggregate model and a new modified PRETREE (MP) model for choice/preference modeling literature demonstrated the inferior (n-way) market share predictions of the PRETREE compared to MP. The superior n-way predictions of MP also incorporate more input information and eliminates partial IIA assumptions that are required by the PRETREE.