# Set

Given a set $\mathcal S$, and a class (collection of sets) $\mathcal H$. For any subset of $\mathcal … As simple as the inner product of two vectors$\$ d_{cos} = \frac{\vec A}{\vert \vec A \vert} \cdot …

Jaccard index is the ratio of the size of the intersect of the set and the size of the union of the …