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weights
2002 Dec 18
1
Kernel smoothing.
I wish to produce a weighted (Gaussian?) kernel density estimate, in
2 dimensions, where the weights are permitted to be ***negative***.
(I can ASSURE you that there are perfectly legitimate reasons why I
want to do this. :-)) Clearly it is not really a density that I am
trying to estimate.
I had a go at using sm.density() from the sm package, but this
requires that the weights be positive. Is