| group.npvarselec | Group variable selection for nonparametric regression |
| localpoly.reg | Local Polynomial Regression Fitting |
| npmodelcheck | Hypothesis Testing for Covariate or Group effect in Nonparametric Regression |
| npvarselec | Variable selection for covariates in nonparametric regression |
| plot3d.localpoly.reg | 3d plot from a local polynomial fit |