1. Smearing
A specific comment on smearing: most references
comment on smearing (Naihua Duan JASA 1983)
applied as a fix after log transformation
of the response variable, which is presumably
by far the most common case. But the method
is more general, applying to monotonic,
continuously differentiable transformations.
2. GLMs
I'll repeat a relevant reference
quoted last month in a different thread.
There is a very good pedagogic paper
Lane, P.W. 2002. Generalized linear models
in soil science. European Journal of Soil
Science 53, 241-251
which focuses on the merits of transformation
as compared with generalized linear models.
I owe this reference to Stata user Allan Reese.
You may be able to access it electronically.
Don't be put off by the mention of soil science;
you don't need to understand anything much about
soil science. The examples are not intrusive.
Nick
[email protected]
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