A Procedural Semantics For Well Founded Negation In Logic Programs
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A Procedural Semantics for Well Founded Negation in Logic Programs
Author | : Kenneth A. Ross |
Publisher | : |
Total Pages | : 29 |
Release | : 1988 |
Genre | : |
ISBN | : |
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We introduce global SLS-resolution, a procedural semantics for well-founded negation as defined by Van Gelder, Ross and Schlipf. Global SLS-resolution extends Przymusinski's SLS-resolution, and may be applied to all programs; whether locally stratified or not. Global SLS-resolution is defined in terms of global trees, a new data structure representing the dependence of goals on derived negative subgoals. We prove that global SLS-resolution is sound with respect to the well-founded semantics, and complete for non-floundering queries.
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