Learningtheory.org:

Learningtheory.org has 4 URLs listed in 3 Dmoz categories.

Conference on Learning Theory (COLT)
2004, July 1-4, Banff, Canada. Theoretical modeling and analysis of all aspects of learning and empirical inference. Submission deadline 24 February 2004.
http://learningtheory.org/colt2004/
Top/Computers/Artificial_Intelligence/Conferences_and_Events/Past_Conferences_and_Events

Computational Learning Theory
A research field devoted to studying the design and analysis of algorithms for making predictions about the future based on past experiences. The emphasis in COLT is on rigorous mathematical analysis. COLT is largely concerned with computational and data
http://www.learningtheory.org/
Top/Computers/Artificial_Intelligence/Machine_Learning

COLT 2001 and EuroCOLT 2001
The Fourteenth Annual Conference on Computational Learning Theory (held jointly with the Fifth European Conference on Computational Learning Theory). Trippenhuis, Amsterdam, the Netherlands July 16 - July 19, 2001.
http://www.learningtheory.org/colt2001
Top/Computers/Artificial_Intelligence/Machine_Learning/Conferences

COLT 2000
Thirteenth Annual Conference on Computational Learning Theory, Stanford University. June 28 - July 1, 2000
http://www.learningtheory.org/colt2000/
Top/Computers/Artificial_Intelligence/Machine_Learning/Conferences