1. Dealing with structure heterogeneity in semantic collaborative information systems / Eva Zangerle, Wolfgang Gassler -- 2. Collaborative mediation: how the power of collaboration in social computing demands greater thought diversity / Brian Goodman -- 3. SpotTheLink: a game-based approach to the alignment of ontologies / Stefan Thaler ... [et al.] -- 4. Knowledge management / Salman Iqbal ... [et al.] -- 5. Enhancing social networks with agent and semantic web technologies / Federico Bergenti, Enrico Franchi, Agostino Poggi -- 6. Exploiting social media features for automated tag recommendation / Rabeeh Ayaz Abbasi -- 7. Semantic technology for improved email collaboration / Simon Scerri -- 8. The reflexive practitioner: knowledge discovery through action research / Stephen Dobson -- 9. Data mining, validation, and collaborative knowledge capture / Martin Atzmueller, Stephanie Beer, Frank Puppe -- 10. Hidden Markov models for context-aware tag query prediction in folksonomies / Chiraz Trabelsi, Bilel Moulahi, Sadok Ben Yahia -- 11. Techniques for named entity recognition: a survey / Girish Keshav Palshikar -- 12. Ontological collaboration engineering / Stefan Werner Knoll ... [et al.] -- 13. Developing a web-based cooperative environment to software project development / Seyed Morteza Babamir -- 14. Knowledge based business intelligence for business user information self-service / Matthias Mertens, Tobias Krahn -- 15. Knowledge worker performance in a cross-industrial perspective / Rainer Erne.