fitModel                Function to fit an ANCOVA model to the log
                        transformed gene expression data, with a
                        certain specified number of surrogate
                        variables.
hfp                     Function to construct a heatmap of the hidden
                        variation in the gene expression data.
hidden_fac.dat          A gene expression data affected by a hidden
                        variable.
svapls-package          Surrogate variable analysis using Partial Least
                        Squares in a gene expression data
svpls                   Function for identfying the optimal ANCOVA
                        model and detecting the genes that are truly
                        differentially expressed between the two types
                        of samples.
