ifa.aic                 A function to compute the AIC
ifa.bic                 A function to compute the BIC
ifa.em                  Fitting an Independent Factor Analysis model by
                        the EM algorithm
ifa.init.pca            Internal function to initialize the IFA
                        parameters to ordinary factor solution
ifa.init.random         A function to randomly inizialize the IFA
                        parameters
ifa.predict             A function to predict the latent variables
memory                  Memory Tests on Alzheimer and Depressed
                        Patients
