RedisのHyperLogLogを使ってユニークユーザー数を推定する « Rest Term

http://rest-term.com/archives/3154/

database - How does the HyperLogLog algorithm work? - Stack Overflow

http://stackoverflow.com/questions/12327004/how-does-the-hyperloglog-algorithm-work

乱択データ構造の最新事情 －MinHash と HyperLogLog の最近の進歩－

http://www.slideshare.net/iwiwi/minhash

MinHash, b-bit MinHash, HyperLogLog, Odd Sketch, HIP Estimator の解説です