This study considers the theoretical bootstrap “coupling” techniques for nonparametric robust smoothers and quantile regression, and we verify the bootstrap improvement. To handle the curse of dimensionality, a variant of “coupling” bootstrap techniques is developed for additive models...

We examine the intra-metropolitan location decisions of retail stores by focusing on the openings of a comprehensive list of department (“anchor”) stores in the United States. The nonparametric K-density procedure shows that new stores are more dispersed than existing stores; their locations...

Recovering a function f from its integrals over hyperplanes (or line integrals in the two-dimensional case), that is, recovering f from the Radon transform Rf of f, is a basic problem with important applications in medical imaging such as computerized tomography (CT). In the presence of...