Similarity

Locality-sensitive SimHash for document similarity - finds near-duplicate content efficiently

MinHash for Jaccard similarity estimation - used in duplicate detection and recommendation systems

Compact b-bit MinHash - memory-efficient similarity detection for large-scale applications

Enhanced SuperMinHash (2017) - improved accuracy over traditional MinHash for similarity search

Nilsimsa hash for spam detection - specialized locality-sensitive hash for email and text analysis

I-Match lexicon-based similarity algorithm - customizable duplicate detection using word dictionaries