Authors: Zeineb Dhouioui; Jalel Akaichi
Addresses: BESTMOD Laboratry ISG Tunis, University of Tunis, Tunisia ' Department of Biomedical Informatics, King Khaled University, Guraiger, Abha, KSA
Abstract: The sensitive information revealed in social networks is a real threat menacing users' privacy. Hence, trust is required to enhance the security policies in these networks. Motivated by the privacy problems in particular the danger of sexual predators and the disregard of the dynamic aspect of social networks, users popularity and activity which may affect the precision of the expected results of influential users detection, we aim to present a generic model to improve security policies. To do so, we use text mining techniques to distinguish suspicious conversations using lexical and behavioural features classification and to determine influential users having the maximum trust score value. This trust score is calculated using an algorithm called DynamicInflu inspired by the honey bee's foraging behaviour based on popularity and activity parameters. The experiments are performed on real data and the comparison of the DynamicInflu algorithm with commonly used approaches showed a good performance.
Keywords: dynamic social networks; security policies; sexual predators; influential users; trust score; bees algorithm; PageRank; betweenness centrality; privacy protection; privacy preservation; text mining; suspicious conversations; lexical features classification; behavioural features classification; social networking.
International Journal of Autonomic Computing, 2016 Vol.2 No.2, pp.155 - 175
Received: 24 Jun 2016
Accepted: 01 Oct 2016
Published online: 31 Jan 2017 *