On Sat, Mar 3, 2012 at 2:36 PM, Peter Langfelder
wrote:
> 3. Instead of calculating the correlations one-by-one, calculate them
> in small blocks (if you have enough memory and you run a 64-bit R).
> With 900M rows, you will only be able to put a 900Mx2 into an R
> object, but if you have two suc
I don't think you can speed it up by a whole lot... but you can try a
few things, especially if you don't have missing data in the matrix
(which you probably don't). The main question is what takes most of
the time- the api calls or the cor() call? If it's cor, here's what
you can try:
1. Pre-stan
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