R devel - Mar 2010 - application to mentor syrfr package development for Google Summer of Code 2010

Per http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010
-- and http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010:syrfr
-- I am applying to mentor the "Symbolic Regression for R" (syrfr)
package for the Google Summer of Code 2010.

I propose the following test which an applicant would have to pass in
order to qualify for the topic:

1. Describe each of the following terms as they relate to statistical
regression: categorical, periodic, modular, continuous, bimodal,
log-normal, logistic, Gompertz, and nonlinear.

2. Explain which parts of http://bit.ly/tablecurve were adopted in
SigmaPlot and which weren't.

3. Use the 'outliers' package to improve a regression fit maintaining
the correct extrapolation confidence intervals as are between those
with and without outlier exclusions in proportion to the confidence
that the outliers were reasonably excluded.  (Show your R transcript.)

4. Explain the relationship between degrees of freedom and correlated
independent variables.

Best regards,

James Salsman
jsalsman at talknicer.com
http://talknicer.com

It's been a while since I proposed syrfr and I have been constantly in
contact with the many people in the R community and I wasn't able to find a
mentor for the project. I later got interested in the Automatic
Differentiation proposal (adinr) and, on consulting with a few others within
the R community, I mailed John Nash (who proposed adinr in the first place)
if he'd be willing to take me up on the project. I got a positive reply only
a few hours ago and it was my mistake to have not removed the syrfr proposal
in time from the wiki, as being listed under proposals looking for mentors.

While I appreciate your interest in the syrfr proposal I am afraid my
allegiances have shifted towards the adinr proposal, as I got convinced that
it might interest a larger group of people and it has wider scope in
general.

I apologize for having caused this trouble.

Best Regards,
Chillu

On Mon, Mar 8, 2010 at 6:41 AM, James Salsman
<jsalsman@talknicer.com>wrote:
> Per http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010
> -- and
> http://rwiki.sciviews.org/doku.php?id=developers:projects:gsoc2010:syrfr
> -- I am applying to mentor the "Symbolic Regression for R"
(syrfr)
> package for the Google Summer of Code 2010.
>
> I propose the following test which an applicant would have to pass in
> order to qualify for the topic:
>
> 1. Describe each of the following terms as they relate to statistical
> regression: categorical, periodic, modular, continuous, bimodal,
> log-normal, logistic, Gompertz, and nonlinear.
>
> 2. Explain which parts of http://bit.ly/tablecurve were adopted in
> SigmaPlot and which weren't.
>
> 3. Use the 'outliers' package to improve a regression fit
maintaining
> the correct extrapolation confidence intervals as are between those
> with and without outlier exclusions in proportion to the confidence
> that the outliers were reasonably excluded.  (Show your R transcript.)
>
> 4. Explain the relationship between degrees of freedom and correlated
> independent variables.
>
> Best regards,
>
> James Salsman
> jsalsman@talknicer.com
> http://talknicer.com
>
> ______________________________________________
> R-devel@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
>
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