Table 1: Comparison of various discriminant methods for simulated data.

Model Apparent error rate
Training sample Test sample

Multiple-group neural discriminant model ( = 5) 0.290 0.308
Proportional odds model 0.550 0.543
Linear discriminant model 0.545 0.525
Quadratic discriminant model 0.518 0.500
Tree-based model 0.290 0.345