Discovering Subsumption Hierarchies of Ontology Concepts from Text Corpora. IEEE/WIC/ACM International Conference on Web Intelligence.. 2007.
Determining Automatically the Size of Learned Ontologies (short paper). European Conference on Artificial Intelligence (ECAI 2008).. 2008.
Learning Ontologies of Appropriate Size. Artificial Intelligence: Theory, Methods and Applications (5th Hellenic Conference on Artificial Intelligence, SETN 2008).. 2008.
Learning Subsumption Hierarchies of Ontology Concepts from Texts. Web Intelligence and Agent Systems: An International Journal, IOS Press. 8. 2010.