> On 13 Jan 2016, at 02:50, tomdhar...@gmail.com wrote:
>
> So my question is: How can the rows of a large sparse matrix be
> efficiently scaled?
If you're not picky about the particular storage format, the "wordspace" package
http://wordspace.r-forge.r-project.org/
has an efficient scaleMargins() function, which can be made to do what you need
in combination with rowNorms() and colNorms(); cf. the trivial implementation
of normalize.rows().
These functions only work with a dgCMatrix and will try to coerce any other
sparseMatrix to this format.
Best,
Stefan
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.
