Re: [R] getting faster results

From: Liaw, Andy <andy_liaw_at_merck.com>
Date: Thu 15 Dec 2005 - 05:16:55 EST


It can depend on a whole list of things why the computations were taking so long, and just saying what methods you are using to do the computation is far from sufficient, as there are efficient ways and inefficient ways to do any computations, and we don't know how you did any of them. With the little information you gave, you cannot honestly expect much help. All anyone can give you is generic advise. Mine is as follows:\

Andy

From: Elizabeth Lawson
>
> I am running algorithms for Bayesian hierarchical models with
> 20 or more variables or writing alogrithms that solve for
> partially linear models using wavlelet estimation. Soemtimes
> just creating the predicted vaules from the Bayesian analysis
> takes over a day to run!
> I am just wondering if R runs faster on any particular
> systems or if it is about the same regardless.
>
> jim holtman <jholtman@gmail.com> wrote:
> Need to know what you are trying to do with the data.
> Depending on what you want to do and how you do it will
> determine the speed. I can take a dataframe with 1,000,000
> rows of transaction data and compute the average and plot a
> histogram of the response time in less that a couple of
> seconds. Is that fast enough?
>
> On 12/13/05, Elizabeth Lawson <lizzylaws@yahoo.com> wrote: Hey,
>
> Can anyone answer this question. I am working with really
> large datasets and most of the programs I have been running
> take quite some time.
>
> I heard that R may be faster in Unix. I sthis true and if so
> can anyone reccomend which system and requirements may allow
> things to go faster for?
>
> Thanks!!
>
> Elizabeth Lawson
>
>
> ---------------------------------
>
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>
>
> --
> Jim
> Holtman
> Cincinnati, OH
> +1 513 247 0281
>
> What the problem you are trying to solve?
>
>
>
> ---------------------------------
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Thu Dec 15 05:23:55 2005

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