Betweenness Centrality | Network Encyclopedia
What is Betweenness Centrality?
Betweenness Centrality measures how often a node lies on the shortest paths between other nodes in a network. It quantifies the extent to which a node acts as a bridge or intermediary, facilitating connections or the flow of information between otherwise unconnected parts of the network. Nodes with high Betweenness Centrality are often critical for maintaining connectivity and enabling communication.
An Example of a Betweenness Centrality
In a public health network, a regional health department might have high Betweenness Centrality if it connects smaller, local health providers that do not directly collaborate. This position allows the regional department to facilitate information sharing and coordination between different parts of the network.
Why Use Betweenness Centrality?
Betweenness Centrality helps identify influential nodes that play a key role in connecting the network. These nodes are often crucial for network resilience but may also represent points of vulnerability if removed. Organizations can leverage this metric to strengthen or protect important connections and improve overall network efficiency.