Statistics library

[Bill Baxter]

On Fri, Oct 24, 2008 at 9:39 AM, dsimcha <dsimcha at yahoo.com> wrote:
> == Quote from Bill Baxter (wbaxter at gmail.com)'s article
>> On Fri, Oct 24, 2008 at 7:43 AM, dsimcha <dsimcha at yahoo.com> wrote:
>> > Since there's really no good comprehensive statistics library for D (Tango has
>> > a little bit, the beginnings of a few are on dsource, but nothing much), Ive
>> > been rolling my own statistics functions as necessary.  Almost by accident, it
>> > seems like I've built up the beginnings of a decent statistics library.  I'm
>> > debating whether it might be interesting enough to people to be worth
>> > releasing, and whether enough community help would be available to really make
>> > it production quality, or to merge it with other people's efforts in this
>> > area.  The following functionality is currently available:
>> >
>> > 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
>> >
>> > Binomial, hypergeometric, normal, Poisson, Kolmogorov CDFs, hypergeometric,
>> > Poisson, binomial PDFs.
>> >
>> > Inverse normal distribution, and normally distributed random number generation.
>> >
>> > A struct to generate all possible permutations of a sequence.
>> I don't know what a lot of those things are, but statistics to me
>> means you will probably have (or eventually want) things like
>> covariance which are best represented as matrices.  Does your package
>> also have a matrix library?
>> --bb
>
> No, it doesn't have a matrix library right now.  I make no claim that it is in any
> way complete right now, but I do think it has some pretty useful stuff that's not
> likely to be anywhere else for D.

Ok, so it's mainly for 1d statistics then?

--bb