| Centrality indices are answers to the question "What characterizes an important vertex?" The answer is given in terms of a real-valued function on the vertices of a graph, where the values produced are expected to provide a ranking which identifies the most important nodes.<ref name="Christian F. A. Negre, Uriel N. Morzan, Heidi P. Hendrickson, Rhitankar Pal, George P. Lisi, J. Patrick Loria, Ivan Rivalta, Junming Ho, Victor S. Batista. 2018 E12201--E12208">{{cite journal | | | Centrality indices are answers to the question "What characterizes an important vertex?" The answer is given in terms of a real-valued function on the vertices of a graph, where the values produced are expected to provide a ranking which identifies the most important nodes.<ref name="Christian F. A. Negre, Uriel N. Morzan, Heidi P. Hendrickson, Rhitankar Pal, George P. Lisi, J. Patrick Loria, Ivan Rivalta, Junming Ho, Victor S. Batista. 2018 E12201--E12208">{{cite journal | |
| < ref name = “ Christian f. a. Negre,Uriel n. Morzan,Heidi p. Hendrickson,Rhitankar Pal,George p. Lisi,j. Patrick Loria,Ivan Rivalta,Junming Ho,Victor s. Batista。2018 E12201-- E12208” > { cite journal | | | < ref name = “ Christian f. a. Negre,Uriel n. Morzan,Heidi p. Hendrickson,Rhitankar Pal,George p. Lisi,j. Patrick Loria,Ivan Rivalta,Junming Ho,Victor s. Batista。2018 E12201-- E12208” > { cite journal | |