[6287] in s-news-athena

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Re: Summary:counting reps of x

daemon@ATHENA.MIT.EDU (Eran Bellin)
Fri Jan 27 16:01:08 1995

Date: Fri, 27 Jan 1995 14:46:46 -0500 (EST)
From: Eran Bellin <bellin@aecom.yu.edu>
To: "Stephen W. Barnett" <sbarnett@marccri.marc.cri.nz>
Cc: s-news@utstat.toronto.edu
In-Reply-To: <3DC97F180E@marc.cri.nz>

I think Mr. Barnett has missed the larger problem here.  While S-plus is a
powerful environment, it is not very friendly for creating resampling
simulations.  I have read and am aware of Efron's and Tibshirani's book. 
However, when I have tried to create my own universes with resampling
procedures I have frequently found myself with severe memory limitations. 
In addition, the time it takes for this interpreted language to perform a
simulation is often prohibitive even on a 486-33 pc clone.  S-plus or this
user community should create the tools for exploring the resampling
procedures in S-plus.  More importantly, it would be helpful if those in
this audience who are able provide examples of simulation code for the
creation of universes with resampling.  Important questions of how likely
clustering occurs with such resampling procedures would be of particular
interest to me.

Eran Bellin, M.D.
Director, Infectious Disease Services
Montefiore Rikers Island Health Service
15-15 Hazen Street
East Elmhurst, N.Y. 11370
Phone (718) 546-5170     FAX(718) 546-5211


On Thu, 26 Jan 1995, Stephen W. Barnett wrote:

> bshipley@courrier.usherb.ca (Bill Shipley) wrote:
> 
> > It never occured to me that functions with names like "table" or "rle" would do
> > what I wanted.  Is this problem with documentation of functions in S-PLUS
> > simply due to my lack of experience (stupidity?) or is this a general
> > problem.
> 
> I think this is a good illustration of why one should just READ the 
> manual.  By reading I mean casual perusal with no specific problem in 
> mind.  You will find yourself saying things like "That looks useful!" 
> or "Now, that's clever!".  In the future, when you do actually have a 
> problem that requires a function that's hard to find you will recall 
> having seen it in passing and now where to find more info on it.
> 
> This mimmicks the way we learn anything.  As children we don't ask our 
> parents what that thing on 4 wheels is called, we hear them call it a 
> car and store this information away for future use.
> 
> Cheers,
> 
> Stephen. W. Barnett
> 
> Sun System Administrator
> 
> The Horticulture and Food Research Institute of N.Z. Ltd
> Private Bag 92169
> Auckland
> New Zealand




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