MinHash, LSH, LSH Forest, Weighted MinHash, HyperLogLog, HyperLogLog++, ...
Dynatrace hash library for Java
A Clojure library for querying large data-sets on similarity
Paper about the estimation of cardinalities from HyperLogLog sketches
Routines and data structures for using isarn-sketches idiomatically in A...
Memory-efficient Count-Min Sketch Counter (based on Madoka C++ library)