Expressive Languages for Path Queries over Graph-Structured Data
Summary: Introduces ECRPQs: extend CRPQs with path variables in heads and regular relations over tuples of paths, enabling path outputs and expressive relations among paths for tasks like semantic associations and pattern/sequence alignment. Presents automata-based representations, analyzes data/combined complexity and containment, and identifies syntactic restrictions plus FO and arithmetic extensions (length/count constraints) to trade expressiveness for lower complexity. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Pablo Barceló
- 2. Carlos Hurtado
- 3. Leonid Libkin
- 4. Peter Wood
Incoming Citations (Sorted by Pagerank)
Showing 24 of 24 citing papers.
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Outgoing Citations (Sorted by Pagerank)
Showing 3 of 3 cited papers.
Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.
| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 256 | GraphLog: a Visual Formalism for Real Life Recursion | 1990 | PODS | 0.00030241337 |
| 808 | Query Containment for Conjunctive Queries With Regular Expressions | 1998 | PODS | 0.000164132 |
| 1,873 | Flexible Queries over Semistructured Data | 2001 | PODS | 0.00010255165 |
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Semantically Similar Papers
| Overall Rank | Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 364 | A Graphical Query Language Supporting Recursion | 1987 | SIGMOD | 0.00025657601 |
| 6,818 | Conjunctive Regular Path Queries with String Variables | 2020 | PODS | 4.911014e-05 |
| 5,435 | A Trichotomy for Regular Simple Path Queries on Graphs | 2013 | PODS | 5.5074113e-05 |
| 11,017 | Efficient Regular Simple Path Queries under Transitive Restricted Expressions | 2024 | VLDB | 4.1905499e-05 |
| 3,659 | The Complexity of Evaluating Path Expressions in SPARQL | 2012 | PODS | 6.8684407e-05 |
| 8,803 | Conjunctive Regular Path Queries under Injective Semantics | 2023 | PODS | 4.4426077e-05 |
| 4,949 | Querying Graph Patterns | 2011 | PODS | 5.8090034e-05 |
| 1,445 | Finding Regular Simple Paths in Graph Databases | 1989 | VLDB | 0.00011937596 |
| 11,328 | Data Path Queries over Embedded Graph Databases | 2022 | PODS | 4.1905499e-05 |
| 1,040 | Querying Graph Databases | 2013 | PODS | 0.00014483577 |