Extended Generalized Blockmodeling for Compound Communities and External Actors

Some social communities evident their own unique internal structure. In the paper we consider social communities composed of several cohesive subgroups which we call compound communities. For such communities, an extended generalized blockmodeling is proposed, taking into account the structure of compound communities and relations with external actors. Using the extension, the community protection approach is proposed and used in detection of spam directed towards an e-mail local society.