== Quote from Don ([EMAIL PROTECTED])'s article > > Binomial, hypergeometric, normal, Poisson, Kolmogorov CDFs, hypergeometric, > > Poisson, binomial PDFs. Inverse normal distribution, > Most of these are in Tango (not Kolmogorov). Are yours different in some > way?
They calculate the exact log factorial using a caching scheme. Not sure how much accuracy this actually buys, though it costs some memory. I should probably change the logFactorial function to a gamma approximation at least for large N. Also, Tango doesn't have hypergeometric. > > A struct to generate all possible permutations of a sequence. > > > > Correlation (Pearson, Spearman rho, Kendall tau). Note that the > Kendall > > tau correlation is a very efficient O(N log N) version. > > > > Mean, standard deviation, variance, kurtosis, percent variance for > arrays of > > numeric values. > > > > Shannon entropy, mutual information. > > > > Kolmogorov-Smirnov tests > Sounds good. This is more the part that I thought might be useful. > > On the other hand, I'm a scientist, not a full-time programmer, > Me too! > > Is there any interest in this from others in the D community? Do other > > people > > think that D would benefit from having a decent statistics library? > Yes. Which is why I put the existing stuff into Tango. BCS has offered me Scrapple access, I'll post the code there under a permissive license. From there, Tango and Phobos devs can look at it and do as they see fit.
