Machine Learning

Monday, March 28, 2005

UAI paper on monotonicity constraints

Here is the abstract from the paper Tom Dietterich, Angelo Restificar, and myself have just submitted to UAI:

"When training data is sparse, more domain knowledge must be incorporated into the learning algorithm in order to reduce the effective size of the hypothesis space. This paper builds on previous work in which knowledge about qualitative monotonicities was formally represented and incorporated into learning algorithms (e.g., Clark & Matwin's work with the CN2 rule learning algorithm). We show how to interpret knowledge of qualitative influences, and in particular of monotonicities, as constraints on probability distributions, and to incorporate this knowledge into Bayesian network learning algorithms. We show that this yields improved accuracy, particularly with very small training sets."

Full text in pdf or in ps

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