Below is the some code, may be helpful for you. [maybe have the finished
package which includes mlr with crossvaliation], you can check
http://cran.r-project.org/web/packages/available_packages_by_date.html.
you can check this
Maybe the following code is helpful for you. At the same time, you can
check the
ChemometricsWithRhttp://cran.r-project.org/web/packages/ChemometricsWithR/index.html
package
from http://cran.r-project.org/web/packages/available_packages_by_date.html.
# product crossvalidation index
crossvalind
Hi all,
I am facing the imbalanced classification problems. That means I have a
dataset, in which the ratio of majority data to minority data is 100:1 (or
more).
In addition, the independent variables are many and this is a binary
classification questions.
The model I built give poor predictive
format first (RDS, ff, sqlite, bigmemory, ...). Most packages have
routines to convert CSV files to the binary format.
With all of the above LaF helps. ffbase contains a routine laf_to_ffdf to
convert to to ff format.
HTH,
Jan
On 04/27/2013 04:34 AM, Kevin Hao wrote:
Thank you very much
Hi all scientists,
Recently, I am dealing with big data ( 3G txt or csv format ) in my
desktop (windows 7 - 64 bit version), but I can not read them faster,
thought I search from internet. [define colClasses for read.table, cobycol
and limma packages I have use them, but it is not so fast].
file into smaller ones.
On Fri, Apr 26, 2013 at 8:09 AM, Kevin Hao rfans4ch...@gmail.com wrote:
Hi all scientists,
Recently, I am dealing with big data ( 3G txt or csv format ) in my
desktop (windows 7 - 64 bit version), but I can not read them faster,
thought I search from internet
, Ye Lin ye...@lbl.gov wrote:
Have you think of build a database then then let R read it thru that db
instead of your desktop?
On Fri, Apr 26, 2013 at 8:09 AM, Kevin Hao rfans4ch...@gmail.com wrote:
Hi all scientists,
Recently, I am dealing with big data ( 3G txt or csv format ) in my
, Kevin Hao rfans4ch...@gmail.com wrote:
Hi all scientists,
Recently, I am dealing with big data ( 3G txt or csv format ) in my
desktop (windows 7 - 64 bit version), but I can not read them faster,
thought I search from internet. [define colClasses for read.table, cobycol
and limma packages I
Thank you very much.
More and more methods are coming. That sounds great!
Thanks,
kevin
On Fri, Apr 26, 2013 at 7:51 PM, Duncan Murdoch murdoch.dun...@gmail.comwrote:
On 13-04-26 3:00 PM, Kevin Hao wrote:
Hi Ye,
Thanks.
That is a good method. have any other methods instead of using
Hi all,
Can you help me change my Kennard-Stone algorithm to faster one?
[The original code can run fast in matlab, but when I change matlab code to
R code, it is so slow.]
Since my code so crude and too many loops (changed from matlab code), it is
too slow. I hope that you can help to improve
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