Hello All,

I just changed the r-square computation within the validation service. So
far I used the squared sample correlation coefficient. However, it seems
that the more common way to compute r-square is 1 - SSE/SST (thats how it is
computed in R as well).
I updated the validation statistics page (
http://opentox.org/data/documents/development/validation/validation-statistics)
accordingly.

Best regards,
Martin


P.S. some links
r-square definitions:
http://web.maths.unsw.edu.au/~adelle/Garvan/Assays/GoodnessOfFit.html
http://en.wikipedia.org/wiki/Coefficient_of_determination#Definitions
r-square as squared sample correlation coefficient
http://mathworld.wolfram.com/CorrelationCoefficient.html


-- 
Dipl-Inf. Martin Gütlein
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