What is exactly hyperunique?

Hi all,

I read the documentation and many forums, but still cannot get the point precisely of what is hyperunique?

What does it mean? What is it used for?

Any example?

Thanks!

http://druid.io/blog/2012/05/04/fast-cheap-and-98-right-cardinality-estimation-for-big-data.html is a really good overview

https://datasketches.github.io/docs/HLL/HllSketchVsDruidHyperLogLogCollector.html has some great comparisons on accuracy as well

Ok thanks for these sources… I ll check that