Conjunctive Regular Path Queries with String Variables
Summary: CXRPQ extends CRPQs by adding string variables (backreferences) to form conjunctive xregex path queries, enabling inter-path dependencies beyond CRPQs. General data complexity is PSpace-hard; three NL-data fragments exist with combined ExpSpace/PSpace/NP; CXRPQ is compared to CRPQs, unions of CRPQs, and ECRPQs. (summarized by gpt-5-nano on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Markus L. Schmid (Humboldt University of Berlin)
BibTeX Citation
@inproceedings{schmid_pods20,
address = {New York, NY, USA},
series = {{PODS} '20},
title = {{Conjunctive Regular Path Queries with String Variables}},
url = {https://dl.acm.org/doi/10.1145/3375395.3387663},
doi = {10.1145/3375395.3387663},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Schmid, Markus L.},
year = {2020}
}Incoming Citations (Sorted by Pagerank)
Showing 1 of 1 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 7,487 | When is the Evaluation of Extended CRPQ Tractable? | 2022 | PODS | 5.6072799e-05 |
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Outgoing Citations (Sorted by Pagerank)
Showing 8 of 8 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 300 | GraphLog: a Visual Formalism for Real Life Recursion | 1990 | PODS | 0.00022046803 |
| 312 | A Graphical Query Language Supporting Recursion | 1987 | SIGMOD | 0.00021733819 |
| 530 | An Analytical Study of Large SPARQL Query Logs | 2018 | VLDB | 0.0001709169 |
| 686 | Query Containment for Conjunctive Queries With Regular Expressions | 1998 | PODS | 0.00014948634 |
| 747 | Querying Graph Databases | 2013 | PODS | 0.00014400452 |
| 1,528 | Joining Extractions of Regular Expressions | 2018 | PODS | 0.00010486718 |
| 1,575 | Expressive Languages for Path Queries over Graph-Structured Data | 2010 | PODS | 0.00010318258 |
| 3,822 | Split-Correctness in Information Extraction | 2019 | PODS | 7.0925799e-05 |
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