TFRE                    Fit a TFRE regression model with Lasso, SCAD or
                        MCP regularization
coef.TFRE               Extract coefficients from a 'TFRE' object
est_lambda              Estimate the tuning parameter for a TFRE Lasso
                        regression
plot.TFRE               Plot the second stage model curve for a 'TFRE'
                        object
predict.TFRE            Make predictions from a 'TFRE' object
