Wavelets Smoothing for Multidimensional Curves
Davide Pigoli, Laura Maria Sangalli · Contributions to statistics · 2011
We describe a wavelet-based method that provides accurate estimates of curves in more than one dimension and of their derivatives. The method is particularly attractive when the curves to be estimated have a varying smoothness and present strongly localized features. The proposed multidimensional wavelet estimation technique is thus applied to multi-lead electrocardiogram records, where strongly localized features are indeed expected.