DebiasProg              The proposed debiasing (primal) program.
DebiasProgCV            The proposed debiasing (primal) program with
                        cross-validation.
DualCD                  Coordinate descent algorithm for solving the
                        dual form of our debiasing program.
DualObj                 The objective function of the debiasing dual
                        program.
SoftThres               The soft-thresholding function
