"TagOntology is about identifying and formalizing a conceptualization of the activity of tagging, and building technology that commits to the ontology at the semantic level."
H. Kim, A. Passant, J. Breslin, S. Scerri, и S. Decker. Proceedings of the 2nd IEEE International Conference on Semantic Computing, 0, стр. 315-322. Los Alamitos, CA, USA, IEEE Computer Society, (августа 2008)