https://en.wikipedia.org/wiki/MinHash

http://www.mmds.org/ 3.3

https://scikit-learn.org/stable/modules/generated/sklearn.metrics.jaccard_score.html

Let there be given nonempty sets \(A\) and \(B\). Define

\begin{equation} J(A,B) = \dfrac{|A \cup B|}{|A \cap B|}. \label{jaccard} \end{equation}