R help - Feb 2013 - Random number generator used in 'runif'

Dear list,

For the implementation of a particular optimization algorithm it is
very important the random number generator.

I would like to know if somebody could tell me what is the random
number generator used by default in the 'runif' function.
>From the help page of 'runif' and '.Random.seed' I guess
that the
default algorithm is 'Mersenne-Twister', but I would be really
grateful if somebody with experience in random number generators could
confirm that or tell me what is the method actually used.

Thanks in advance,

Mauricio Zambrano-Bigiarini

-- 
====================================Water Resources Unit
Institute for Environment and Sustainability
Joint Research Centre, European Commission
webinfo    : http://floods.jrc.ec.europa.eu/
====================================DISCLAIMER:\ "The views expressed are
purely those of th...{{dropped:12}}

On the same help page, it says "'RNGkind' is a more friendly
interface to query or set the kind of
     RNG in use." 

Try 
RNGkind()

to see the currently selected RNG. The same function with kind= specified will
also change to another

S Ellison
> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of Mauricio 
> Zambrano-Bigiarini
> Sent: 18 February 2013 09:33
> To: r-help at r-project.org
> Subject: [R] Random number generator used in 'runif'
> 
> Dear list,
> 
> For the implementation of a particular optimization algorithm 
> it is very important the random number generator.
> 
> I would like to know if somebody could tell me what is the 
> random number generator used by default in the 'runif' function.
> 
> >From the help page of 'runif' and '.Random.seed' I
guess that the
> default algorithm is 'Mersenne-Twister', but I would be 
> really grateful if somebody with experience in random number 
> generators could confirm that or tell me what is the method 
> actually used.
> 
> Thanks in advance,
> 
> Mauricio Zambrano-Bigiarini
> 
> --
> ====================================> Water Resources Unit
> Institute for Environment and Sustainability Joint Research 
> Centre, European Commission
> webinfo    : http://floods.jrc.ec.europa.eu/
> ====================================> DISCLAIMER:\ "The views
expressed are purely those of
> th...{{dropped:12}}
> 
> ______________________________________________
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> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 
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This email and any attachments are confidential. Any use...{{dropped:8}}

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org]
> On Behalf Of Mauricio Zambrano-Bigiarini
> Sent: Monday, February 18, 2013 1:33 AM
> To: r-help at r-project.org
> Subject: [R] Random number generator used in 'runif'
> 
> Dear list,
> 
> For the implementation of a particular optimization algorithm it is
> very important the random number generator.
> 
> I would like to know if somebody could tell me what is the random
> number generator used by default in the 'runif' function.
> 
> >From the help page of 'runif' and '.Random.seed' I
guess that the
> default algorithm is 'Mersenne-Twister', but I would be really
> grateful if somebody with experience in random number generators could
> confirm that or tell me what is the method actually used.
No guessing necessary, as the R-help is quite explicit


Details

The currently available RNG kinds are given below. kind is partially matched to
this list. The default is "Mersenne-Twister".



Hope this is helpful,

Dan

Daniel Nordlund
Bothell, WA USA