@article{Delgrande_Wang_2015, title={A Syntax-Independent Approach to Forgetting in Disjunctive Logic Programs}, volume={29}, url={https://ojs.aaai.org/index.php/AAAI/article/view/9402}, DOI={10.1609/aaai.v29i1.9402}, abstractNote={ <p> In this paper, we present an approach to forgetting in disjunctive logic programs, where forgetting an atom from a program amounts to a reduction in the signature of that program. Notably, the approach is syntax-independent, so that if two programs are strongly equivalent, then the result of forgetting a given atom in each program is also strongly equivalent. Our central definition of forgetting is abstract: forgetting an atom from program P is characterised by the set of those SE consequences of P that do not mention the atom to be forgotten. We provide an equivalent, syntactic, characterization in which forgetting an atom p is given by those rules in the program that do not mention p, together with rules obtained by a single inference step from those rules that do mention p. Forgetting is shown to have appropriate properties; in particular, answer sets are preserved in forgetting an atom. As well, forgetting an atom via the syntactic characterization results in a modest (at worst quadratic) blowup in the program size. Finally, we provide a prototype implementation of this approach to forgetting. </p> }, number={1}, journal={Proceedings of the AAAI Conference on Artificial Intelligence}, author={Delgrande, James and Wang, Kewen}, year={2015}, month={Feb.} }