----- "Ted Dunning" <ted.dunn...@gmail.com> a écrit : > Everything in Colt was untested and as a result there were bugs and > inconsistencies. > > As part of the Mahout project, we have redefined the matrix primitives > to be > more amenable to our needs and simpler to extend than the original > Colt > arrays. We have been busily either testing and converting code that > we > needed to build a scalable machine learning code and are > simultaneously > deleting pretty much everything that doesn't contribute to that goal.
I'm not sure anymore about which project the original question addressed. Was it for Mahout or Commons-math ? Luc > > Some things are still around and some have already been deleted. I > believe > that I was the one who recently deleted the Descriptive statistics > back > based largely on the fact that it wasn't very compatible with the rest > of > Colt (it uses DoubleArrayList instead of DoubleArray1D, for instance) > and > because most of the functions are relatively trivial. > > Since autocorrelation depends on FFT's to compute and because it would > be > quite a bit of work to implement good tests FFT's, I > think that is still the right decision for us to have made. > > If you have a need for autocorrelation and would like to work with us > to > rehabilitate and port the associated Colt code, I would > be happy to help by advising about our nascent conventions about how > we are > organizing our code and what sort of testing and > porting is needed. > > > On Sun, Sep 26, 2010 at 8:36 PM, video axescon <vi...@axescon.com> > wrote: > > > Hello > > > > I cant find autocorrelation function in stats package. Is there a > reason > > why > > it wasn't implemented? > > It exists in Colt project. > > > > cheers > > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org
