General Departmental Seminar Series
Spatial Smoothing over Difficult Regions
Timothy Ramsay, Statistics, Canada
Friday, Mar 30, 2001, 12:00-1:00 pm
3285 Medical Sciences Center
1300 University Ave.
In some spatial smoothing problems, the domain to be smoothed has a complex geometry and that geometry may have an important impact on the appropriate choice of smoothing method. Both the thinplate spline and kernel smoother rely, either explicitly or implicitly, on the euclidean metric for borrowing information from nearby points. This talk will present a bivariate smoothing function based on splines and finite element analysis. Voter preference data from the 2000 presidential election will be smoothed to illustrate the advantages of the finite element spline when smoothing over complicated domains.
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