Compute the out-degree centrality for nodes.

The out-degree centrality for a node v is the fraction of nodes its outgoing edges are connected to.

Parameters:G (graph) – A NetworkX graph
Returns:nodes – Dictionary of nodes with out-degree centrality as values.
Return type:dictionary
Raises:NetworkXError – If the graph is undirected.


The degree centrality values are normalized by dividing by the maximum possible degree in a simple graph n-1 where n is the number of nodes in G.

For multigraphs or graphs with self loops the maximum degree might be higher than n-1 and values of degree centrality greater than 1 are possible.