See http://en.wikipedia.org/wiki/Loess . It is not an acronym: the derivation is given in the reference given by ?loess, p.314.
On Mon, 31 May 2010, Peter Neuhaus wrote:
Dear R-community, maybe someone can help me with this: I've been using the loess() smoother for quite a while now, and for the matter of documentation I'd like to resolve the acronym LOESS. Unfortunately there's no explanation in the help file, and I didn't get anything convincing from google either. I know that the predecessor LOWESS stands for "Locally Weighted Scatterplot Smoothing". But what does LOESS stand for, specifically? "Locally Weighted Exponential Scatterplot Smoothing"? As far as I understand LOESS is still a local polynomial regression, so that would probably make no sense. Any help appreciated! Thanks in advance, Peter
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