TY - CONF T1 - Challenges in personalized authority flow based ranking of social media T2 - Proceedings of the 19th ACM international conference on Information and knowledge management Y1 - 2010 A1 - Sayyadi,H. A1 - Edmonds,J. A1 - Hristidis,V. A1 - Raschid, Louiqa JA - Proceedings of the 19th ACM international conference on Information and knowledge management ER -