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This study examined the relationships among four core concepts in social network analysis\u2014network redundancy, information redundancy, ego-alter similarity, and tie strength\u2014and their impacts on information diffusion. By using more than 6,500 representative ego networks containing nearly 1 million following relationships from Twitter, the current study found that (1) network redundancy is positively associated with the probability of being retweeted even when competing variables are controlled for; (2) network redundancy is positively associated with information redundancy, which in turn decreases the probability of being retweeted; and (3) the inclusion of both ego-alter similarity and tie strength can attenuate the impact of network redundancy on the probability of being retweeted.<\/jats:p>","DOI":"10.1177\/0093650216682900","type":"journal-article","created":{"date-parts":[[2017,12,31]],"date-time":"2017-12-31T05:57:47Z","timestamp":1514699867000},"page":"250-272","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":23,"title":["Network Redundancy and Information Diffusion: The Impacts of Information Redundancy, Similarity, and Tie Strength"],"prefix":"10.1177","volume":"46","author":[{"given":"Hai","family":"Liang","sequence":"first","affiliation":[{"name":"The Chinese University of Hong Kong, Shatin, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"King-wa","family":"Fu","sequence":"additional","affiliation":[{"name":"The University of Hong Kong, Pokfulam, Hong Kong"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2016,12,27]]},"reference":[{"key":"bibr1-0093650216682900","doi-asserted-by":"publisher","DOI":"10.1186\/s40649-015-0023-6"},{"key":"bibr2-0093650216682900","doi-asserted-by":"crossref","unstructured":"Bakshy E., Rosenn I., Marlow C., Adamic L. 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