[R] Memory allocation problem (during kmeans)
Dear all,
I am trying to apply kmeans clusterring on a data file (size is about 300
Mb)
I read this file using
x=read.table('file path' , sep= )
then i do kmeans(x,25)
but the process stops after two minutes with an error :
Error: cannot allocate vector of size 907.3 Mb
when i read the archive i notice that the best solution is to use a 64bit
OS.
Error messages beginning cannot allocate vector of size indicate a failure
to obtain memory, either because the size exceeded the address-space limit
for a process or, more likely, because the system was unable to provide the
memory. Note that on a 32-bit OS there may well be enough free memory
available, but not a large enough contiguous block of address space into
which to map it.
the problem that I have two machines with two OS (32bit and 64bit) and when
i used the 64bit OS the same error remains.
Thank you if you have any suggestions to me and excuse me because i am a
newbie.
Here the default information for the 64bit os:
sessionInfo()
R version 2.7.1 (2008-06-23)
x86_64-redhat-linux-gnu
gc()
used (Mb) gc trigger (Mb) max used (Mb)
Ncells 137955 7.4 35 18.7 35 18.7
Vcells 141455 1.1 786432 6.0 601347 4.6
I tried also to start R using the options to control the available memory
and the result still the same. or maybe i don't assign the correct values.
Thank you in advance.
--
Rami BATAL
[[alternative HTML version deleted]]
__
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] Question about knn
Hello all, am a newby in R, am trying the knn function, and am doing just a stupid test : knn(c(1,2,3,4,5,6), c(3), k=4 ,prob=TRUE,factor(c(1:6))) the result is unstable !! i have each time different result : [1] 5 attr(,prob) [1] 0.167 Levels: 1 2 3 4 5 6 [1] 4 attr(,prob) [1] 0.167 Levels: 1 2 3 4 5 6 [1] 1 attr(,prob) [1] 0.167 Levels: 1 2 3 4 5 6 ect... I would like to know why ? the thing that am searching for is to have the 4 NN and sort them according to there distance to the test point. Tank you -- Rami [[alternative HTML version deleted]] __ 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.
