방법 비교

	Directed Modularity Analysis	Betweenness Centrality
분야	네트워크 분석	네트워크 분석
계열	Machine learning	Machine learning
기원 연도	2008	1977
창시자	Leicht, E. A. & Newman, M. E. J.	Freeman, L. C.
유형	Community detection / graph partitioning	Centrality measure
원전	Leicht, E. A., & Newman, M. E. J. (2008). Community structure in directed networks. Physical Review Letters, 100(11), 118703.	Freeman, L. C. (1977). A set of measures of centrality based on betweenness. Sociometry, 40(1), 35–41.
별칭	directed community detection via modularity, directed Q-modularity, digraph modularity optimization, Leicht-Newman modularity	Freeman betweenness, BC, geodesic betweenness, shortest-path betweenness
관련	5	6
요약	Directed modularity analysis extends the classic Newman-Girvan modularity framework to directed graphs, where edges carry a source and a destination. Formalized by Leicht and Newman in 2008, it partitions nodes into communities by maximizing a modularity score that accounts for each node's separate in-degree and out-degree in the null model, making it the standard approach for community detection in citation networks, information flows, and other asymmetric relational data.	Betweenness centrality, formalized by Linton C. Freeman in 1977, measures how often a node lies on the shortest path connecting every other pair of nodes in a network. High-betweenness nodes act as bridges or brokers: removing them fragments the network into disconnected components more severely than removing any other nodes.