Summingbird uses algebird. I think Stripe might also have a library, Avi Bryant was toying with this for a while.
Algebird has some nice features like not doing approximation at all for small sets (just use the real values), etc. we also recently did a bunch of work to make sure we can serialize all approximate structures so they can be correctly reused by different computations, sent across the wire, etc. I don't recall doing speed comparisons and the like, it would be interesting to see them if you guys are choosing what library to use. On Nov 13, 2013, at 12:33 AM, Ted Dunning <[email protected]> wrote: > stream-lib is used quite widely and is generally high quality. > > The other competitive library is Brick House from Klout. > > http://engineering.klout.com/2013/01/introducing-brickhouse-major-open-source-release-from-klout/ > > > > > On Tue, Nov 12, 2013 at 7:28 PM, Timothy Chen <[email protected]> wrote: > >> Just saw this library today and thought it's something we can potentially >> leverage: >> >> https://github.com/addthis/stream-lib >> >> It has a number of algo for approximation streams and has code for >> cardinality estimation (HyperLogLog) and others. >> >> Looks like Twitter's SummingBird uses this library too. >> >> Tim >>
