Volume 42, Number 1, 1 February 1990
Volume 42, Number 2-3, 1 March 1990
: A Critical Examination of Allen's Theory of Action and Time.
: A Dynamic Systems Perspective on Qualitative Simulation.
: Quantitative Results Concerning the Utility of Explanation-based Learning.
Gregory F. Cooper
: The Computational Complexity of Probabilistic Inference Using Bayesian Belief Networks.