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Computing Query Probability with Incidence Algebras

Summary: Applies Möbius inversion in incidence algebras to compute probabilities of unions of conjunctive queries over tuple-independent PDBs, yielding a simple PTIME algorithm for the class of “safe” queries and FP#P-hardness for all unsafe ones. Shows Möbius-based inclusion–exclusion can compute some safe queries despite unsafe subqueries and uses lattice-theoretic analysis to prove lifted-conditioning approaches are incomplete. (summarized by gpt-5-mini on Feb 09 2026)

Paper ID
1519
Venue
PODS
Year
2010
Pagerank
7.6209731e-05
Overall Rank
3,229 | 77.85%
DOI
10.1145/1807085.1807113

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@inproceedings{dalvi_pods10,
        address = {New York, NY, USA},
        series = {{PODS} '10},
        title = {{Computing Query Probability with Incidence Algebras}},
        url = {https://dl.acm.org/doi/10.1145/1807085.1807113},
        doi = {10.1145/1807085.1807113},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Dalvi, Nilesh and Schnaitter, Karl and Suciu, Dan},
        year = {2010}
}

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