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Acyclic Conjunctive Regular Path Queries are no Harder than Corresponding Conjunctive Queries

Summary: Output-sensitive evaluation of acyclic CRPQs matches the best known bounds for corresponding acyclic CQs, parameterized by input/output size and free-connex fractional hypertree width. Thus, RPQ recursion adds no output-sensitive complexity. (summarized by gpt-5.6-luna on Jul 26 2026)

Paper ID
h2d4f20acae28bb2c
Venue
PODS
Year
2026
Pagerank
4.9793485e-05
Overall Rank
10,363 | 30.33%
DOI
10.1145/3801891

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BibTeX Citation

@inproceedings{khamis_pods26,
        address = {New York, NY, USA},
        series = {{PODS} '26},
        title = {{Acyclic Conjunctive Regular Path Queries are no Harder than Corresponding Conjunctive Queries}},
        url = {https://dl.acm.org/doi/10.1145/3801891},
        doi = {10.1145/3801891},
        booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
        publisher = {Association for Computing Machinery},
        author = {Khamis, Mahmoud Abo and Hurjui, Alexandru-Mihai and Kara, Ahmet and Olteanu, Dan and Suciu, Dan},
        year = {2026}
}

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