GraphReciprocity
GraphReciprocity[g] gives the reciprocity of a graph g.
GraphReciprocity[{v->w,…}] uses rules v->w to specify the graph g.
Examples
Compute the reciprocity of a directed graph:
GraphReciprocity[Graph[{1 -> 2, 2 -> 1, 2 -> 3}]]Please visit the official Wolfram Language Reference for more details.