Hi,
thanks,
I was looking exactly to the same document recently and thought that I
could try to reproduce some examples from chapter 3.
Maybe we can join our effort and reproduce the examples as a Pillar
chapter somewhere ?
Le 27/6/15 12:40, Serge Stinckwich a écrit :
Good job Pierre !
I was looking exactly to the same document recently and thought that I
could try to reproduce some examples from chapter 3.
Yes I pass it to alex because pierre will visit us and I propose to
enhance the statistical part as well build on top of NeoCSV to improve
data collection.
Maybe we can join our effort and reproduce the examples as a Pillar
chapter somewhere ?
Serge the histogram objects (not the drawer) should be packaged in
SciSmalltalk.
Stef
Regards,
On Sat, Jun 27, 2015 at 12:16 AM, Pierre CHANSON <chans.pierre(a)gmail.com>
wrote:
> Hola todos,
>
> These days I am working on compete with R. I am taking the datasets and
> examples from
>
http://cran.r-project.org/doc/contrib/Zhao_R_and_data_mining.pdf and
> make it with Roassal even better ! Or almost... ;)
>
> First chapter first pages, the histograms... In Roassal they were not
> working so well.
>
> So lately I restructured the RTDistribution package. This, by default
> make a classical frequency distribution, with an optimized number of
> classes. The method #strategyBlock: allows to change the strategy for the
> distribution.
>
> I also worked on the RTHistogramSet and method #histogram of
> SequenceableCollection to improve a bit the looking. There is still here
> some work to do but at least the histogram works well and looks fine.
>
> We worked with Alejandro on the algorithm of frequency distribution to
> make it efficient compared to the classic one (Only one iteration on datas
> during the algo itself).
>
> Here are some examples, don't hesitate to try a bit and give me
> feedbacks if any bugs, so I can move on the next graphs ;)
>
> #(5 3 8 6 5 4 2 9 1 2) histogram.
>
> #(1 2 3) histogram.
>
> #(555 1 1 2) histogram.
>
> ((1 to: 1000) collect: [:i | i atRandom ]) histogram.
>
>
>
>
> Also, I found this page and thought it was really nice animations !!
>
http://bost.ocks.org/mike/algorithms/
>
> cheers,
>
> Pierre
>
>
>
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>
--
Serge Stinckwich
UCBN & UMI UMMISCO 209 (IRD/UPMC)
Every DSL ends up being Smalltalk
http://www.doesnotunderstand.org/
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