Hi Vincent,
it would perhaps be helpful if you could specify your proposal "Standard
statistical tests: normality, variance, mean, distribution" a bit,
because eventually some of these are already implemented and would just
need a wrapper to be easily usable. perhaps it would be enough if one
would know which R-functions you use or so, and what kind of return
you'd expect.
werner
On 03/03/2016 10:43 AM, Blondeau Vincent wrote:
Hi,
That's a very good idea.
For now, I use a Pharo-R binding to make the statistics, but it is better if it
is directly in the image.
For my part, it should be nice to have:
- Principal Component Analysis
- Time series
- Correlation with several variables (Correlation matrix) + significance tests
(pearson, spearman...)
- Standard statistical tests: normality, variance, mean, distribution
- And the more important is to have nice tools to visualize the data (Box plot,
histogram, scatterplots, PCA ones) with a simple API for standard things but
that we can customize. The best is that we are able to draw regression lines on
them. But I think that is more a Roassal part.
Thanks for the initiative,
Cheers,
Vincent
-----Message d'origine-----
De : Pharo-users [mailto:pharo-users-boun...@lists.pharo.org] De la part de
stepharo
Envoyé : mercredi 2 mars 2016 14:17
À : Pharo Development List; Any question about pharo is welcome; Didier
Besset; Souissi Sami
Objet : [Pharo-users] Call about Numerical Methods in Pharo :)
Hi guys
I met Didier Besset and we had a great hacking session and discussions with
Serge Stinckwich.
Didier would like to help Pharo and the numerical part of it. ***Big
thanks*** Didier.
We would like to do several things:
- Work on "Hows to"
The numerical methods in Pharo is good but the gap between us and the
math is too large :)
so the idea is to have a series of "how to ..."
- histomgram (simple, based on distribution)
- Improve the SciPharo/NumPha (previously SciSmalltalk) library
This morning we started to implement a
ComponentPrincipalDecomposition by combining two of the
objects available in SciPharo.
Then we started to enhance the distributions to make sure that we can
plug other distribution for having
controlled random number.
- Do a public call to know what is missing for you: this is this mail :)
Didier would like to work on concrete cases. I love that attitude
So tell us :)
Hernan ??
Alex: ?? pvalue? better distribution?
Vincent: covariance? CPA?
Philippe: times series
Serge R frames?
Sami: Better random number and various distributions?
- Organise a two day lectures with practices on concrete case in September
with a recording session.
Either at IRD Bondy or Lille.
- Make sure that the Numerical Method book will get on lulu :) with a
better cover and title :)
Stef
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