Identification of Group Changes in Blogosphere
  The paper addresses a problem of change identification in social group evolution. A new SGCI method for discovering of stable groups was proposed and compared with existing GED method. The experimental studies on a Polish blogosphere service revealed that both methods are able to identify similar evolution events even though both use different concepts. Some differences were demonstrated as well 
Bogdan Gliwa, Stanis{\l}aw Saganowski, Anna Zygmunt, Piotr Br\'odka,   Przemys{\l}aw Kazienko, Jaros{\l}aw Ko\'zlak
cs.SI physics.soc-ph