On Thu, Jul 18, 2013 at 10:00 PM, Dmitriy Lyubimov <[email protected]>wrote:
> btw Mahout's qr seems to garble the input argument matrix so it is unusable > after that. It doesn't seem to document so and intuitively that's not > what one expects. Took me quite a while to figure today where the stuff > went wrong all of a sudden (i start using it to early-test for > decomposition rank deficiency in als-wr). Should probably at least say so. > Hmm... yes. It should say so. In fact, I think it should copy to a secret place before doing that to leave the input unchanged.
