Alternative methods with concave penalties have also been used, as for example the group SCAD. Zhu and Li [35] develop an alternative method based on nonlinear dimension reduction which is shown to perform well in nonparametric additive models.
Alternative methods with concave penalties have also been used, as for example the group SCAD.Zhu and Li [35] develop an alternative method based on nonlinear dimension reduction which is shown to perform well innonparametric additive models.