If I create a HyperLogLog per day to count unique visitors, and then the 1st of January I merge the last 365 ones will I get the same value than if I ...
If I create a HyperLogLog per day to count unique visitors, and then the 1st of January I merge the last 365 ones will I get the same value than if I ...
Does HyperLogLog store the actual members or only the count of members it is storing? If it is not storing the actual members, how does PFMERGE know ...
Can someone explain in a better way (well, in a way for dummies to understand), or more correctly how to install HyperLogLog hll extension for Postgre ...
I have read in a few articles that HyperLogLog and LogLog use a hash function and that it is solely responsible for the prediction value. If we assign ...
I should solve a count-distinct problem in Redis without the use of HyperLogLog (because of the 0.81% of known error). I got different requests with ...
The scenario is really simple. I'm adding 50 elements (different each time) to a HLL. Usually at the third time, I get a wrong PFCOUNT (151 instead of ...
I have a use case where I need to check if an element already exists in the Hyperloglog and if not, I need to make a hbase call. Do we have any method ...
My query looks like: let's say I run this query 10000 times (on the same set of data), will I get 10000 identical results or a small percentage of ...
Is there a solution similar to Hyperloglog for graph databases like Tinkerpop. .count() step takes forever on large dataset, however approximation wou ...
Is there a way to modify the default HLL approximation algorithm with ThetaSketch in Druid? So that while querying for count distinct, druid by defaul ...
I’m designing an algorithm to count unique users on a set of pages, based on a 60min sliding scale So it needs to find unique IPs (or tokens) that ha ...
I'm using the HyperLogLog (hll) field to represent unique users, using the Django django-pg-hll package. What I'd like to do is get a cumulative total ...
in my BigQuery project I store event data integrated from Firebase. The granularity and dimension is such that trying to present raw data in Data Stud ...
HyperLogLogs take up 12KB of space. I don't see anything in the docs about when that storage is freed up. My current plan is to call EXPIRE every tim ...
Context: we have telemetry system for our service and would like to track retention, how many users use various features, etc. There are two options ...
I can use the following query to general all the HLL sketches of the distinct counts: And I get something like this: While I would normally use ...
I am wondering if it is possible to do an approximate distinct count in the following way: I have an aggregation like this: And I'm wonde ...
Trying to use aggregate function ApproximateDistinct.ApproximateDistinctFn from apache beam sql, this failed. my SQL: SELECT ApproximateDistinct ...
I need to save HLL sketches into BigQuery from ApacheBeam. I found some extension library for Apache-Beam that does it: But I can't find a way to s ...
and I am initializing the hyper logs in my Base Application like this can anyone tell me what's wrong I am doing here ?? ...