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news-006068		New Notre Dame paper focuses on degree centrality in networks | News | Notre Dame News | University of Notre Dame			.html	text/html	826	30	39	Centrality is also an important concept in the theory of social networks. Nitesh Chawla, the Frank Freimann Collegiate Associate Professor of Computer Science and Engineering and director of the University’s Interdisciplinary Center for Network Science and Applications, and his doctoral students Yang Yang and Yuxiao Dong point out that social networks are dynamic and evolve over time when new individuals (nodes) join a network, or new links form between nodes or old links diminish between nodes.	cache/news-006068.html	txt/news-006068.txt