Source: Ann. Statist. Volume 26, Number 3
(1998), 943-971.
Additive regression models have turned out to be a useful
statistical tool in analyses of high-dimensional data sets. Recently, an
estimator of additive components has been introduced by Linton and Nielsen
which is based on marginal integration. The explicit definition of this
estimator makes possible a fast computation and allows an asymptotic
distribution theory. In this paper an asymptotic treatment of this estimate is
offered for several models. A modification of this procedure is introduced. We
consider weighted marginal integration for local linear fits and we show that
this estimate has the following advantages.
(i) With an appropriate choice of the weight function, the additive
components can be efficiently estimated: An additive component can be estimated
with the same asymptotic bias and variance as if the other components were
known.
(ii) Application of local linear fits reduces the design related
bias.
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