PDB                     Planning database published in year 2015.
Recumbent               Recumbent cows
automobile              Automobiles data
d.boots                 Bootstrap estimation for dimension (d) of
                        sufficient dimension reduction subspaces.
d.test                  Testing methods for selecting dimension of the
                        central mean subspace.
dsp                     Distance between two subspaces.
invFM                   Fourier transform approach on inverse dimention
                        reduction method.
itdr                    Integral transformation Methods of Estimating
                        Sufficient Dimension Reduction Subspaces in
                        Regression.
wh                      Bootstrap estimation for the bandwidth of the
                        Gaussian kernel density estimation.
wx                      Bootstrap estimation for the tuning parameter
                        for the predictor variables.
wy                      Bootstrap estimation for the tuning parameter
                        of the response variable.
