Function betweenness_centrality 

pub fn betweenness_centrality<N, E, Ix>(
    graph: &Graph<N, E, Ix>,
    normalized: bool,
) -> HashMap<N, f64>
where
    N: Node + Debug,
    E: EdgeWeight,
    Ix: IndexType,

Betweenness centrality for nodes

Measures the extent to which a node lies on paths between other nodes.