A social database about things you know and love, spanning millions of topics in thousands of categories. Explore Freebase, add to it, or build applications with it.
M. Daoud, L. Tamine, M. Boughanem, and B. Chebaro. Proceedings of the 2007 international conference on Web information systems engineering, page 325--336. Berlin, Heidelberg, Springer-Verlag, (2007)