TY - JOUR
T1 - MWeb: A principled framework for modular web rule bases and its semantics
AU - Damásio, Carlos Augusto Isaac Piló Viegas
PY - 2011/1/1
Y1 - 2011/1/1
N2 - We present a principled framework for modular web rule bases, called MWeb. According to this framework, each predicate defined in a rule base is characterized by its defining reasoning mode, scope, and exporting rule base list. Each predicate used in a rule base is characterized by its requesting reasoning mode and importing rule base list. For legal MWeb modular rule bases S, the MWebAS and MWebWFS semantics of each rule base s $ın$ S w.r.t. S are defined model-theoretically. These semantics extend the answer set semantics (AS) and the well-founded semantics with explicit negation (WFSX) on ELPs, respectively, keeping all of their semantical and computational characteristics. Our framework supports: (i) local semantics and different points of view, (ii) local closed-world and open-world assumptions, (iii) scoped negation-as-failure, (iv) restricted propagation of local inconsistencies, and (v) monotonicity of reasoning, for fully shared predicates.
AB - We present a principled framework for modular web rule bases, called MWeb. According to this framework, each predicate defined in a rule base is characterized by its defining reasoning mode, scope, and exporting rule base list. Each predicate used in a rule base is characterized by its requesting reasoning mode and importing rule base list. For legal MWeb modular rule bases S, the MWebAS and MWebWFS semantics of each rule base s $ın$ S w.r.t. S are defined model-theoretically. These semantics extend the answer set semantics (AS) and the well-founded semantics with explicit negation (WFSX) on ELPs, respectively, keeping all of their semantical and computational characteristics. Our framework supports: (i) local semantics and different points of view, (ii) local closed-world and open-world assumptions, (iii) scoped negation-as-failure, (iv) restricted propagation of local inconsistencies, and (v) monotonicity of reasoning, for fully shared predicates.
KW - modular web rule bases
KW - local closed-world and open-world assumptions
KW - scoped negation-as-failure
KW - local semantics
U2 - 10.1145/1877714.1877723
DO - 10.1145/1877714.1877723
M3 - Article
VL - 12
SP - Article \#17, 41 pages
JO - Acm Transactions On Computational Logic
JF - Acm Transactions On Computational Logic
SN - 1529-3785
IS - 2
ER -