This piece is based on two talks I gave in the spring of 2005 -- one at the O'Reilly ETech conference in March, entitled "Ontology Is Overrated", and one at the IMCExpo in April entitled "Folksonomies & Tags: The rise of user-developed classification." Th
A. Hotho, D. Benz, R. Jäschke, and B. Krause (Eds.) International Workshop at the European Conference on Machine Learning and Principles and Practice of Knowledge Discovery in Databases in Antwerp, Belgium, September 15th, 2008., (2008)
D. Yellin. Reprint of PhD thesis, Department of Comp. Sc., Columbia University,
New York, NY, volume 302. Springer-Verlag, New York--Heidelberg--Berlin, (1988)