The Business Analysis Module consists of three main components:

• the regression classes

• the parameter calculation classes

• the model selection classes

The parameter calculation classes calculate regression parameters from input regression data. The regression classes contain regression data and a parameter calculation object. These classes couple regression data and parameter calculations; the currently calculated parameters and the regression data contained by a regression object are always in sync. Finally, the model selection classes take a regression object from which they extract the regression data and calculation object. They search subsets of the predictors and select an optimal subset by applying a user-defined model evaluation function.