TPC                     Variable Selection via Thresholded Partial
                        Correlation
TPC_BIC                 Variable Selection via Thresholded Partial
                        Correlation
TPC_pl                  Variable Selection via Thresholded Partial
                        Correlation
TPC_pl_BIC              Variable Selection via Thresholded Partial
                        Correlation
generate_toy_pldata     A function to generate toy partial linear model
                        data
