Social Networks:

>>[Course] Social Network Analysis (by Noshir Contractor)

>>[Seminar] The State of the Art of Social Networking Service (PPT presentation)

Digital libraries:

>>[Seminar series] Applications of Library Classification Systems

>>[Seminar series] Ontologies and Knowledge Organization Systems (KOS)

Ontologies:

>>[Seminar] Collaborative Ontology Engineering (PPT presentation) (PDF paper)
The presentation is composed from presentations provided by the authors and is published on this site on authors' consent. More material on the topic can be found here.