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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
4.9769913e-05
Overall Rank
10,375 | 30.27%
DOI
10.1145/3801891
PDF
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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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Outgoing Citations (Sorted by Pagerank)

Showing 13 of 13 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank Cited Paper Year Venue Pagerank
17 Provenance Semirings 2007 PODS 0.00059813669
315 Worst-Case Optimal Join Algorithms: Techniques, Results, and Open Problems 2018 PODS 0.00021236408
357 FAQ: Questions Asked Frequently 2016 PODS 0.00020013731
419 Cypher: An Evolving Query Language for Property Graphs 2018 SIGMOD 0.00018537915
540 An Analytical Study of Large SPARQL Query Logs 2018 VLDB 0.0001671863
720 Querying Graph Databases 2013 PODS 0.00014522278
2,302 On Functional Aggregate Queries with Additive Inequalities 2019 PODS 8.6687541e-05
5,491 Fast Join Project Query Evaluation using Matrix Multiplication 2020 SIGMOD 6.1067499e-05
6,469 Output-sensitive Conjunctive Query Evaluation 2024 PODS 5.7719911e-05
6,576 Output-Optimal Algorithms for Join-Aggregate Queries 2025 PODS 5.7428578e-05
6,855 Minimizing Conjunctive Regular Path Queries 2025 PODS 5.6624049e-05
9,420 Output-Sensitive Evaluation of Regular Path Queries 2025 PODS 5.1802184e-05
11,095 Fast Matrix Multiplication meets the Submodular Width 2025 PODS 4.9769913e-05
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