Sharif Digital Repository

Nowadays, in our contemporary societies the social networks and online communities have carved for themselves a crucial niche and unique status. Maintaining and enhancing a core relation between their communities, thus have proven to be a worthy challenge to IT professionals. We have proposed a model for developing and maintaining a cohesive relation between members in social networks and improved their interaction and cooperation via collaboration of different social networks .We focus on the definition and properties of transitivity and semantic attributes ,which explains the relationship between members’ attributes and their membership level in social networks and leading us to provide...