analysis of the online social networks and discovering
communities in such networks. Web sites of the social
networks have a unique capacity through the internet to
establish communications and social interactions among
the people who are even geographically far from each
other, and connect them in different states, and allow
them to have interaction and sharing of information with
different people including colleagues, acquaintances,
family, fans, activists and so on [4]. The online social
networks can be considered in different cases, some
systems like Facebook which is designed clearly for social
interactions, or flicker which is designed for different
services including content sharing; also it allows the users
to have social interactions in a great level. Using the
online social networks besides providing people to have
relationships, allow the users to update each other,
communicate their likes, dislikes, views and share
personal and public information[5]. In such networks,
besides the connections, nodes include more information
like Feature and performed activities by nodes