Re: Study about accuracy of statistical software, incl. Octave

[Jaroslav Hajek]

On Sun, Mar 22, 2009 at 1:52 PM, Ivan Sutoris <address@hidden> wrote:
> Through R-help mailing list, I've stumbled upon an upcoming study
> comparing accuracy of free statistical software (R, Python, Ox and
> Octave), which I thought may be of some interest here. For Octave
> (authors used version 2.9.12), they report some problems with accuracy
> when computing correlation coefficient (corrcoef), quantiles for some
> distributions (tinv, chi2inv) and for linear regression (regress from
> Octave-Forge). Here is the reference and link:
>
> Almiron, M. and Almeida, E. S. and Miranda, M.: The Reliability of
> Statistical Functions in Four Software Packages Freely used in
> Numerical Computation. (to appear in) Brazilian Journal of Probability
> and Statistics, Special Issue on Statistical Image and Signal
> Processing
> http://www.imstat.org/bjps/papers/Almiron.pdf
>
> Regards
> Ivan Sutoris

Do the deficiencies reported for Octave still hold for 3.1.x? At least
the absence of nonlinear regression is now outdated. Maybe someone
would be interested in a follow-up paper? :)

regards


-- 
RNDr. Jaroslav Hajek
computing expert & GNU Octave developer
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz