Combining Neural and Symbolic Learning to Revise Probabilistic Rule Bases

Part of Advances in Neural Information Processing Systems 5 (NIPS 1992)

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J. Mahoney, Raymond Mooney


a system for revising probabilis(cid:173)

This paper describes RAPTURE - tic knowledge bases that combines neural and symbolic learning methods. RAPTURE uses a modified version of backpropagation to refine the certainty factors of a MYCIN-style rule base and uses ID3's information gain heuristic to add new rules. Results on re(cid:173) fining two actual expert knowledge bases demonstrate that this combined approach performs better than previous methods.