Looking for a package to do some statistics in Pharo
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Looking for a package to do some statistics in Pharo
 
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Stef,
I think our banned troll is back :( Beyond that, nothing as important as statistics is off-topic here. I tend to use R because it does "everything," though its language is almost purely syntax over substance - hardly the OO bliss that its creators seem to believe it is. Some things (e.g. linear regression, medians, quintiles in general) have filtered into my reach with Pharo. Attached is some work so far on GSL, targeted at 1.3 and up. You *might* find what you need in #gsl_stats_* methods, but no promises yet. I regenerated the whole mess to use underscores, making it *far* easier to match code with the GSL documentation. Ditto on the structures, which are a big mess right now. I am trying to isolate "bad" things in packages marked "old" to ease ridding myself of Camel case where it hurts (interfacing). Camel case is nice in wrappers, and I am using it there. This will take time to finish, but I hope to release a set of wrappers that are important to me (YMMV) and the generated methods and structs to follow along in wrapping things important to others. It is big library. Challenges over time have included the long absence of callbacks, and various levels of underscore support that forced me to Camel case when I should not have done so, but had no choice "back when," and now problems passing void* and bumps in generating struct field accessors in recent FFIs. Failing those things, this would have been done a while ago, but that's a lot of "ifs." Bill From: [hidden email] [[hidden email]] on behalf of Gastón Dall' Oglio [[hidden email]]
Sent: Friday, March 02, 2012 9:00 PM To: [hidden email] Subject: Re: [Pharo-project] Looking for a package to do some statistics in Pharo Hello.
mmm that's is some off topic, but if you want see info about development, see you that interesting tool for version control visualization :)
Regards.
El 2 de marzo de 2012 15:12, Stéphane Ducasse
<[hidden email]> escribió:
Hi guys |
gsl-partial.zip (49K)
Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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+1. I just (finally) ordered the book, which should help. Three things put me off of this:
(1) (perhaps biased) how can Smalltalk code be fast enough? (2) No examples, poor categorization (3) The use of histograms in least squares fitting - I'm a parametric guy. Re the dearth of examples, I created a few (attached) - barely scratching the surface, I know. I'm really stumped on OptimzationDHB and #points:function:. The method signature sounds like what I want to do, but I doubt that something as "simple" as DhbLeastSquareFit points:self sampleDataNegativeExponentialPlusConstant function:[ :x :a :alpha :b | a * ( (x / alpha) squared negated exp ) + b ]. is going to be "understood." We know that x is the independent variable and a, alpha and b are parameters to be found, but I have no idea how to express that to the code. Any ideas? It might be that I need to look at the optimizers, since most of my fits are really about minimizing residuals. Is Levenberg-Marquardt anywhere in the mix? Bill ________________________________________ From: [hidden email] [[hidden email]] on behalf of Alexandre Bergel [[hidden email]] Sent: Saturday, March 03, 2012 7:30 AM To: [hidden email] Subject: Re: [Pharo-project] Looking for a package to do some statistics in Pharo I am interested in this. Cheers, Alexandre On 3 Mar 2012, at 05:35, Stéphane Ducasse wrote: > Thanks > I was reviewer for the book of didier. > Now I think that it would be good to revive the project and make it even better. > I started to have a look. I will publish a configuration to start with. > > Stef > > > On Mar 3, 2012, at 9:13 AM, Douglas McPherson wrote: > >> Indeed, you should check out DHBNumerical. I'm using it for Kalman filter development/simulation, and have previously done Galois field simulation using Bessett's DHBPolynomial. These are many included probability distributions and statistical queries built in, so quite likely has what you need. No underscores needed :) >> >> Doug >> >> On Mar 2, 2012, at 10:12 , Stéphane Ducasse wrote: >> >>> Hi guys >>> >>> I would like to know if there is a package doing some statistics in Pharo. >>> I should check the work of didier besset but I want to know if there is more. >>> >>> It would be good to have such kind of package. >>> >>> >>> Stef >>> >> >> > > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. |
Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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Re: Looking for a package to do some statistics in Pharo
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