Another good explanation, this one with a javascript simulation of HLL: http://research.neustar.biz/2012/10/25/sketch-of-the-day-hyperloglog-cornerstone-of-a-bi

Another good explanation, this one with a javascript simulation of HLL: http://research.neustar.biz/2012/10/25/sketch-of-the-day-hyperloglog-cornerstone-of-a-big-data-infrastructure/ http://research.neustar.biz/2012/10/25/sketch-of-the-day-hyp...