This is a new extension that provides approximate algorithms for big data
analysis based on the Datasketches library:
https://datasketches.github.io/
The extension is available on PGXN:
https://pgxn.org/dist/datasketches/1.0.0/
Git repository:
https://github.com/DataSketches/sketches-postgres
User list:
https://groups.google.com/forum/#!forum/sketches-user