Re: [R] loess function take
Alternatively, use only a subset to run loess(), either a random sample or
something like every other k-th (sorted) data value, or the quantiles. It's
hard for me to imagine that that many data points are going to improve your
model much at all (unless you use tiny span).
Andy
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Uwe Ligges
On 12.04.2012 05:49, arunkumar wrote:
Hi
The function loess takes very long time if the dataset is very huge
I have around 100 records
and used only one independent variable. still it takes very long time
Any suggestion to reduce the time
Use another method that is computationally less expensive for that many
observations.
Uwe Ligges
-
Thanks in Advance
Arun
--
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Re: [R] loess function take
Since you have only one dependent variable, try using lowess()
instead. It is less flexible -- only does local linear robust fitting
-- but has arguments built in that allow you to sample and interpolate
and limit the number of robustness iterations. It runs considerably
faster as a result.
-- Bert
On Fri, Apr 13, 2012 at 6:32 AM, Liaw, Andy andy_l...@merck.com wrote:
Alternatively, use only a subset to run loess(), either a random sample or
something like every other k-th (sorted) data value, or the quantiles. It's
hard for me to imagine that that many data points are going to improve your
model much at all (unless you use tiny span).
Andy
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Uwe Ligges
On 12.04.2012 05:49, arunkumar wrote:
Hi
The function loess takes very long time if the dataset is very huge
I have around 100 records
and used only one independent variable. still it takes very long time
Any suggestion to reduce the time
Use another method that is computationally less expensive for that many
observations.
Uwe Ligges
-
Thanks in Advance
Arun
--
View this message in context:
http://r.789695.n4.nabble.com/loess-function-take-tp4550896p4550896.html
Sent from the R help mailing list archive at Nabble.com.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
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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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and provide commented, minimal, self-contained, reproducible code.
--
Bert Gunter
Genentech Nonclinical Biostatistics
Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
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Re: [R] loess function take
As lowess() is mentioned another in similar vein is locfit() from
package locfit
Duncan
Duncan Mackay
Department of Agronomy and Soil Science
University of New England
ARMIDALE NSW 2351
Email home: mac...@northnet.com.au
At 00:07 14/04/2012, you wrote:
Since you have only one dependent variable, try using lowess()
instead. It is less flexible -- only does local linear robust fitting
-- but has arguments built in that allow you to sample and interpolate
and limit the number of robustness iterations. It runs considerably
faster as a result.
-- Bert
On Fri, Apr 13, 2012 at 6:32 AM, Liaw, Andy andy_l...@merck.com wrote:
Alternatively, use only a subset to run loess(), either a random
sample or something like every other k-th (sorted) data value, or
the quantiles. It's hard for me to imagine that that many data
points are going to improve your model much at all (unless you use tiny span).
Andy
From: r-help-boun...@r-project.org
[mailto:r-help-boun...@r-project.org] On Behalf Of Uwe Ligges
On 12.04.2012 05:49, arunkumar wrote:
Hi
The function loess takes very long time if the dataset is very huge
I have around 100 records
and used only one independent variable. still it takes very long time
Any suggestion to reduce the time
Use another method that is computationally less expensive for that many
observations.
Uwe Ligges
-
Thanks in Advance
Arun
--
View this message in context:
http://r.789695.n4.nabble.com/loess-function-take-tp4550896p4550896.html
Sent from the R help mailing list archive at Nabble.com.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Notice: This e-mail message, together with any attachme...{{dropped:11}}
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
Bert Gunter
Genentech Nonclinical Biostatistics
Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
__
R-help@r-project.org mailing list
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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.
__
R-help@r-project.org mailing list
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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.
[R] loess function take
Hi The function loess takes very long time if the dataset is very huge I have around 100 records and used only one independent variable. still it takes very long time Any suggestion to reduce the time - Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/loess-function-take-tp4550896p4550896.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] loess function take
On 12.04.2012 05:49, arunkumar wrote: Hi The function loess takes very long time if the dataset is very huge I have around 100 records and used only one independent variable. still it takes very long time Any suggestion to reduce the time Use another method that is computationally less expensive for that many observations. Uwe Ligges - Thanks in Advance Arun -- View this message in context: http://r.789695.n4.nabble.com/loess-function-take-tp4550896p4550896.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
