Wavelet shrinkage methods are widely recognized as a useful tool for nonpar
ametric regression and signal recovery, while Bayesian approaches to choosi
ng the shrinkage method in wavelet smoothing are known to be effective. In
this paper we extend the Bayesian methodology to include choice among wavel
et bases (and the Fourier basis), and averaging of the regression function
estimates over different bases. This results in improved function estimates
.