No problem. If you decide to run some SSVD accuracy experiments in the future (don't your users ask for that?), please include me in cc -- just in case I miss the post on this mailing list.
Best, Radim > ------------ Původní zpráva ------------ > Od: Dmitriy Lyubimov <[email protected]> > Předmět: Re: SVD in Mahout (was: Mahout Lanczos SVD complexity) > Datum: 18.12.2011 23:41:51 > ---------------------------------------- > Radim, > > And thanks for the pointer to accuracy studies. I haven't read them frankly. > > It would seem to me that compiling 500 values very accurately is > currently either prohibitively costly or not very plausible in large > scale solvers regardless of approach.it would be interesting to > compare if they were. Also I am dubious if at scale it really matters > that much as even double precision arithmetic would perhaps accumulate > enough errors from that many flops. In practical terms, people don't > care so much even if they skip a couple documents or even hundreds of > documents if they are to process millions, which may be a disturbance > far greater than a precision error accumulated. But like you said, > it's just my opinion. > > >
