
334 Analyzing and Securing Social Networks
mechanism for groups and community organizations. Twitter has had signicant impact on political
events and protest groups.
Twitter communications were credited for their signicant inuence on the toppling of political
regimes in Egypt and Libya. Twitter can provide a way for individuals to communicate without
depending on traditional media outlets. This new paradigm of communication via Twitter services
provides new challenges for stream data mining. Tweets ow in a continuous stream. Our goal is to
decipher and monitor the topics in these tweets, as well as detect when trends emerge. This includes ...