Twitter represents a large complex network of users with diverse and continuously evolving interests. Discussions and interactions range from very small to very large groups of people and most of them occur in the public. Interests are both long and short term and are expressed by the content generated by the users as well as via the Twitter follow graph, i.e. who is following whose content.

Authors and Affiliations

1. Twitter, USA

   Aleksander Kołcz

Editors and Affiliations

1. Institute AIFB, Karlsruhe Institute of Technology, Englerstrasse 11, 76131, Karlsruhe, Germany

   Elena Simperl

2. CITEC, University of Bielefeld, Morgenbreede 39, 33615, Bielefeld, Germany

   Philipp Cimiano

3. Siemens AG Österreich, Siemensstrasse 90, 1210, Vienna, Austria

   Axel Polleres

4. Technical University of Madrid, C/ Severo Ochoa, 13, 28660, Boadilla del Monte, Madrid, Spain

   Oscar Corcho

5. STLab, ISTC-CNR, Via Nomentana 56, 00161, Rome, Italy

   Valentina Presutti

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© 2012 Springer-Verlag Berlin Heidelberg

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