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Backward chaining evaluation in stratified disjunctive theories

Summary: Fixpoint semantics for perfect models of (locally) stratified disjunctive theories enabling classical backward-chaining evaluation. Proof-theoretic counterpart to Negation-by-Default/completion (GCWA/ECWA/ICWA), relates to MILO, extends Magic-Set/Alexander to disjunctive DBs, and gives structural answers plus exact query-validity criteria. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID
900
Venue
PODS
Year
1990
Pagerank
4.1945683e-05
Overall Rank
12,922 | 10.11%
DOI
-

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