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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
899
Venue
PODS
Year
1990
Pagerank
5.093636e-05
Overall Rank
13,117 | 10.01%
DOI
10.1145/298514.298562

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BibTeX Citation

@inproceedings{royer_pods90,
        address = {New York, NY, USA},
        series = {{PODS} '90},
        title = {{Backward chaining evaluation in stratified disjunctive theories}},
        url = {https://dl.acm.org/doi/10.1145/298514.298562},
        doi = {10.1145/298514.298562},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Royer, Véronique},
        year = {1990}
}

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