Abstract
Pure prolog has certain defects as a programming language. To resolve such problems, some extensions of prolog which go beyond horn logic, or alternatively, some non-logical mechanisms need to be introduced. Non-logical mechanisms, however, often do not work as the programmer expects.
In this paper, a simple extension of prolog based on the procedural interpretation of ordinary prolog is discussed. The extended prolog can deal with negative knowledge as well as positive in a unified manner, and improve the terminability of programs.
Utilization of non-monotonicity to express knowledge such as default and inheritance, and the problems attached to the extension are also discussed.
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Aida, H., Tanaka, H. & Moto-Oka, T. A prolog extension for handling negative knowledge. NGCO 1, 87–91 (1983). https://doi.org/10.1007/BF03037025
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DOI: https://doi.org/10.1007/BF03037025