Hi all,
Is there a way to do a matrix multiplication in a faster way?
I am making a product of a matrix (composed of a lot of dummy variables) and a
vector, and is there any way to make it faster?
The simple X %*% y takes too long a time.
I know using sparse matrix would help, but don't know how to do it i R.
Thank you.
_________________________________________________________________
[[elided Hotmail spam]]
[[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.