Dear David,
> * David Meyer [2012-11-06 19:49:15 +0100]:
>
> there is C-code related to *reading* in such a file, but in the
> internal libsvm-format, not the matrix.csr format.
How is the libsvm-format differ from matrix.csr format?
I actually use matrix.csr only because it prints to what libsv
Dear Sam,
there is C-code related to *reading* in such a file, but in the internal
libsvm-format, not the matrix.csr format.
There is no C-code for *writing* this to a file.
There is certainly a way to speed this up, but I am not likely to do
this in the near future.
Best
David
On 2012-11
David,
thanks for adding the feature.
read.matrix.csr and, especially, write.matrix.csr are extremely slow:
usersystem elapsed
8381.988 3810.396 12345.349
for a 2797634 x 224 matrix I have to deal with.
The help page
http://rss.acs.unt.edu/Rdoc/library/e1071/html/read.matrix.csr.ht
Yes, it seems that Prof Meyer hasn't pushed the changes to R forge
yet.
I now did. (There are no other repositories).
David
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On Tue, Aug 28, 2012 at 11:39 PM, Sam Steingold wrote:
>> * R. Michael Weylandt [2012-08-28 17:16:35
>> -0500]:
>>
>> install.packages by default goes to CRAN (the stable repository):
>
> how often are stable released made?
> weekly? monthly?
>
At the discretion of the package maintainers and t
> * R. Michael Weylandt [2012-08-28 17:16:35
> -0500]:
>
> install.packages by default goes to CRAN (the stable repository):
how often are stable released made?
weekly? monthly?
> if you want the bleeding edge, install e1071 from R-forge (note you
> might need a source install if the build bot
install.packages by default goes to CRAN (the stable repository): if
you want the bleeding edge, install e1071 from R-forge (note you might
need a source install if the build bot hasn't gotten to it since the
update)
https://r-forge.r-project.org/R/?group_id=786
Cheers,
Michael
On Tue, Aug 28, 2
Thanks, when will I be able to use the new code?
I just did install.packages("e1071") + library(e1071). no good.
do I need to restart R?
thanks!
> * David Meyer [2012-08-27 22:57:17 +0200]:
>
> done, thanks for the suggestion.
>
> On 2012-08-27 21:15, Sam Steingold wrote:
>>
>> David, could you p
done, thanks for the suggestion.
David
On 2012-08-27 21:15, Sam Steingold wrote:
* jim holtman [2012-08-27 14:55:08 -0400]:
Most likely when 'y' is converted to a dataframe (not sure what the
function 'write.matrix.csr' does since you did not say where you got
it),
sorry,
library(e1071)
'
> * jim holtman [2012-08-27 14:55:08 -0400]:
>
> Most likely when 'y' is converted to a dataframe (not sure what the
> function 'write.matrix.csr' does since you did not say where you got
> it),
sorry,
library(e1071)
> '0' and '1' are converted to factors which probably show up as 1
> and 2 in t
Most likely when 'y' is converted to a dataframe (not sure what the
function 'write.matrix.csr' does since you did not say where you got
it), '0' and '1' are converted to factors which probably show up as 1
and 2 in the file. Here is a quick example:
> x <- sample(c(0,1), 20,TRUE)
> y <- table(x)
> write.matrix.csr(mx, y = y, file = file)
> table(y)
0 1
5194394 23487
$ cut -d' ' -f1 f | sort | uniq -c
23487 2
5194394 1
i.e., 0 is written as 1 and 1 is written as 2.
why?
is there a way to disable this?
--
Sam Steingold (http://sds.podval.org/) on Ubuntu 12.04 (precise) X
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