Sima, Diana M.; Huffel, Sabine Van - In: Journal of the Royal Statistical Society Series B 68 (2006) 3, pp. 383-409
We formulate and solve a semiparametric fitting problem with regularization constraints. The model that we focus on is composed of a parametric non-linear part and a nonparametric part that can be reconstructed via splines. Regularization is employed to impose a certain degree of smoothness on...