Proactive ontology-based content provision in the context of e-learning

Magdeburg, Univ., Fak. für Informatik, Diss., 2008

Ontology learning from semi-structured Web documents

Magdeburg, Univ., Fak. für Informatik, Diss., 2010

Knowledge representation with condensed set-valued attributes

Magdeburg, Univ., Fak. für Informatik, Diss., 2012