pub fn efficiency_ratio(graph: &Graph) -> IgraphResult<f64>Expand description
Compute the efficiency ratio.
global_efficiency / max_efficiency where global_efficiency is the
average inverse shortest-path length over all pairs, and
max_efficiency = 1 (the efficiency of a complete graph).
Equivalent to just the global efficiency for simple graphs.
Returns 0.0 for graphs with fewer than 2 vertices.
ยงExamples
use rust_igraph::{Graph, efficiency_ratio};
// K_3: all pairs at distance 1, eff = 1.0
let g = Graph::from_edges(&[(0,1),(1,2),(0,2)], false, Some(3)).unwrap();
assert!((efficiency_ratio(&g).unwrap() - 1.0).abs() < 1e-10);