Machine Learning
Journal of Machine Learning Research
Journal of Artificial Intelligence Research
Artificial Intelligence
Uncertainty in Artificial Intelligence
International Conference on Machine Learning
AAAI Meetings
Neural Information Processing Systems
Kevin Murphy's Bayes Net Toolbox for Matlab; contains links to many other software packages
Fabio Cozman's Bayesian networks in Java
Reinforcement learning library from the RLAI group at the University of Alberta