apat                    A + t(A)
bctsne                  Calculate BC t-SNE by orthogonal gradient
                        descent
calcPvals               Calculate t-SNE p-values based on a distance
                        matrix
grad                    Calculate t-SNE gradient
ols                     Ordinary least squares, solves B = AX for X.
sqdist                  Calculate squared Euclidean distance
ssx                     Sum of squares
zeroMean                Subtract the column means from X
