[R] error in documentation
Martin Maechler
maechler at stat.math.ethz.ch
Sat Oct 25 14:54:14 CEST 2003
>>>>> "Rajarshi" == Rajarshi Guha <rxg218 at psu.edu>
>>>>> on 24 Oct 2003 10:17:34 -0400 writes:
Rajarshi> Hi, there appears to be an error in the
Rajarshi> documentation for fanny. In the Details section,
Rajarshi> the equation representing the objective function
Rajarshi> has no variable k in it, but the two lines
Rajarshi> following it mention:
Rajarshi> ... k is the number of clusters, ..........
You are correct -- note however that this is only for the text
version of the help page (not the nicely formatted latex/ps/pdf
one which has real mathematical formulae) -- and which you can
get from {when you have latex installed on your computer}
help(fanny, offline = TRUE)
The corrected "text-version" of the formula is
SUM_[v=1..k] (SUM_(i,j) u(i,v)^2 u(j,v)^2 d(i,j)) / (2 SUM_j u(j,v)^2)}
^^^^^^^^
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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