Hi, Chris, That's very nice! It is very helpful for me. I can use the Z-test in the Mastering Algorithms with Perl. Thanks very much!
Frank On 6/7/05, Chris Devers <[EMAIL PROTECTED]> wrote: > On Tue, 7 Jun 2005, Frank Lee wrote: > > > Can anybody give me some ideas about how to use perl module to do > > Z-scores test (Say, Wilcoxon).? > > 1. Find the module. > > 2. Look up the Perldoc that describes how to use it. > > 3. Use it. > > > I'll be glad to help you a bit with step #1 there. > > > A search for Z-score on search.cpan.org -- > > <http://search.cpan.org/search?query=z-score&mode=all> > > -- turns up a number of hits, all of which seem to be applying the > concept of Z-scores to different problem domains. Depending on what > you're doing, one of these may be helpful to you. To pick one at random, > the Bio::Search::HSP::HMMERHSP module has the following: > > Plus Bio::Seach::HSP::GenericHSP methods > [...] > -score => score value for HSP (typically z-score but > depends on analysis) > > <http://search.cpan.org/dist/bioperl/Bio/Search/HSP/HMMERHSP.pm> > > That may or may not be useful to you. > > If you need something more generic, maybe a search for "statistics" will > provide a more general-purpose module. Sure enough, this turns up: > > Bundle::Math::Statistics > > <http://search.cpan.org/~smueller/Bundle-Math-Statistics-1.01/Statistics.pm> > > That, in turn, includes modules like Statistics::Contingency, et al. > > > <http://search.cpan.org/~kwilliams/Statistics-Contingency-0.06/Contingency.pm> > > Maybe that'll help. > > As a search for "Wilcoxon" doesn't seem to turn up any hits, you may be > running out of options. If you're still stuck, the next place to look > may be the book _Mastering Algorithms with Perl_, which has a chapter or > two on statistical programming in Perl. Unfortunately, I don't see > Z-score in the index, but I do see Z-test; my statistics are too rusty > for me to remember if these are the same thing or not. > > <http://www.oreilly.com/catalog/maperl/inx.html#Z> > > But there's a bunch of samples of statistical algorithms in that book, > along with explantions of how they work & how to use them. If all else > fails, that might be enough to help you get started on rolling your own. > > Helpful? > > Sorry to only provide pointers rather than direct help, but as I, err, > don't remember much about Z-scores, I can't be more concrete than that. > If none of this has helped, then maybe it would help if you could > describe the basic algorithm & the list readers can help show you how to > implement it in Perl... :-/ > > > > -- > Chris Devers > -- Do not guess who I am. I am not Bush in BlackHouse -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
