Compute the A loadings
Get_As(LoadBs, Wpca, r0, dt, Economies, ModelType)
list containing the B loadings
matrix of weights of the portfolios observed without errors (N x J or CN x J)
long-run interest rate (scalar or vector with length C)
time interval unit of the model (scalar). For instance, if data is (i) monthly, dt <- 12; (ii) quarterly, dt <- 4; (iii) yearly, dt <- 1
string-vector containing the names of the economies which are part of the economic system
string-vector containing the label of the model to be estimated