Nick Johnson did a Damn Cool Algorithms post [0] on this that inspired me to play around with HLL myself and do a little writeup [1]. [0]: http://blog.notdot.n

Nick Johnson did a Damn Cool Algorithms post [0] on this that inspired me to play around with HLL myself and do a little writeup [1]. [0]: http://blog.notdot.net/2012/09/Dam-Cool-Algorithms-Cardinality-Estimation http://blog.notdot.net/2012/09/Dam-Cool-Algorithms-Cardinali... [1]: https://github.com/sergeio/hyperloglog https://github.com/sergeio/hyperloglog