Functions that calculate a result for each vertex (or a subset of vertices) typically have a vertex selector parameter, controlling which specific vertices to include.

This parameter is usually called vids, but not always. This issue is to make sure that the naming is consistent across all functions.

Incomplete functions that don't use vids:

• nodes: ego()/neighborhood() and related, constraint(), alpha_centrality(), power_centrality(), ...
• v: betweenness, cocitation, bibcoupling, degree, distances, ...
• vids: closeness, similarity, transitivity, strength, page_rank, induced_subgraph, diversity, knn, eccentricity, ...