Sebastian Hellmann

Sebastian Hellmann Johannisgasse 26, Zimmer 5-10 Leipzig Tel.:   +49 341 97 32273 E-Mail

Research Interests

• extraction / reuse of knowledge
• database2owl conversion
• automatic training set composition for concept learning

Projects

• DL-Learner – is a tool for learning concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. The goal of DL-Learner is to support knowledge engineers in constructing knowledge and learning about the data they created.
• xOperator – combines advantages of social network websites with instant messaging. It tries to be a semantic agent for xmpp / jabber network which finds and shares content about resources (using RDF/SPARQL) for you and your jabber friends.

Publications

Hellmann, S.; Lehmann J.; Auer, S.
Poster: Learning of OWL Class Descriptions on Very Large Knowledge Bases, 7th International Semantic Web Conference (ISWC), 2008 Link

Hellmann, S.
Diploma Thesis: Comparison of Concept Learning Algorithms With Emphasis on Ontology Engineering for the Semantic Web (2008). Link

Dietzold, S.; Hellmann S.; Peklo, M.
Using Java Script RDFa Widgets for model/view separation inside read/write websites. SFSW2008

Seminars

• Entwicklung von Semantischen Webanwendungen (SS07)

Supervision of final theses

Um nicht bei jeder Betreuung von NULL anzufangen, sammle ich häufig empfohlene Links und Dateien auf Sebastian Dietzolds Betreuerseite.

Work in progress

• Collette Hagert: Database to OWL Converter (Diploma Thesis)