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STORK and PENGUIN: Logic programming systems using general clauses and defaults

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3 Author(s)
de T.Guerreiro, R.A. ; IBM Brasil, Industria, Maquinas e Services Ltd., Av. Pasteur 138-146, URCA, Rio de Janeiro, Brasil ; Hemerly, A.S. ; Casanova, M.A.

This paper describes two logic programming systems with the expressive power of full clausal first-order logic and with a nonmonotonic component. They provide a direct generalization of pure Prolog and can be implemented using the same technology as Prolog processors. The inference engine of both systems is based on the weak-model elimination method which, in the case of the second system, is extended to incorporate defaults.

Note: The Institute of Electrical and Electronics Engineers, Incorporated is distributing this Article with permission of the International Business Machines Corporation (IBM) who is the exclusive owner. The recipient of this Article may not assign, sublicense, lease, rent or otherwise transfer, reproduce, prepare derivative works, publicly display or perform, or distribute the Article.  

Published in:

IBM Journal of Research and Development  (Volume:36 ,  Issue: 3 )