Betweenness centrality can be calculated for both vertices and edges？

Yes, betweenness centrality can be calculated for both vertices and edges in a network.

Vertex betweenness centrality measures how often a vertex acts as a bridge along the shortest path between two other vertices in the network. It is calculated by counting the number of shortest paths between all pairs of vertices that pass through the vertex in question.

Edge betweenness centrality measures how often an edge acts as a bridge along the shortest path between two other vertices in the network. It is calculated by counting the number of shortest paths between all pairs of vertices that pass through the edge in question.

Both vertex and edge betweenness centrality are important measures of the structural importance of nodes and edges in a network