TY - GEN
T1 - A decidable class of groundable formulas in the general theory of stable models
AU - Bartholomew, Michael
AU - Lee, Joohyung
N1 - Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - We present a decidable class of first-order formulas in the general theory of stable models that can be instantiated even in the presence of function constants. The notion of an argument-restricted formula presented here is a natural generalization of both the notion of an argument-restricted program and the notion of a semi-safe sentence that have been studied in different contexts. Based on this new notion, we extend the notion of safety defined by Cabalar, Pearce and Valverde to arbitrary formulas that allow function constants, and apply the result to RASPL-1 programs and programs with arbitrary aggregates, ensuring finite groundability of those programs in the presence of function constants. We also show that under a certain syntactic condition, argument-restricted formulas can be turned into argument-restricted programs.
AB - We present a decidable class of first-order formulas in the general theory of stable models that can be instantiated even in the presence of function constants. The notion of an argument-restricted formula presented here is a natural generalization of both the notion of an argument-restricted program and the notion of a semi-safe sentence that have been studied in different contexts. Based on this new notion, we extend the notion of safety defined by Cabalar, Pearce and Valverde to arbitrary formulas that allow function constants, and apply the result to RASPL-1 programs and programs with arbitrary aggregates, ensuring finite groundability of those programs in the presence of function constants. We also show that under a certain syntactic condition, argument-restricted formulas can be turned into argument-restricted programs.
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M3 - Conference contribution
AN - SCOPUS:79955751900
SN - 9781577354512
T3 - Proceedings of the International Conference on Knowledge Representation and Reasoning
SP - 477
EP - 485
BT - Principles of Knowledge Representation and Reasoning
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th International Conference on Principles of Knowledge Representation and Reasoning, KR 2010
Y2 - 9 May 2010 through 13 May 2010
ER -