Semantic Acyclicity on Graph Databases
Summary: Characterize semantic acyclicity for UC2RPQs over graph databases: decidable in 2EXPSPACE and EXPSPACE-hard (even without inverses). Evaluation of semantically acyclic UC2RPQs is FPT; provide a robust approximation theory when no equivalent acyclic UC2RPQ exists. (summarized by gpt-5-mini on Feb 09 2026)
Incoming Non-self Citations Over Time
Authors
- 1. Pablo Barceló
- 2. Miguel Romero
- 3. Moshe Y. Vardi
Incoming Citations (Sorted by Pagerank)
Showing 5 of 5 citing papers.
| Rank | Citing Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 1,037 | Querying Graph Databases | 2013 | PODS | 0.00014502493 |
| 1,328 | Hypertree Decompositions: Questions and Answers | 2016 | PODS | 0.00012565612 |
| 4,058 | Efficient Evaluation and Approximation of Well-designed Pattern Trees | 2015 | PODS | 6.4866036e-05 |
| 11,829 | Semantic Acyclicity Under Constraints | 2016 | PODS | 4.1945683e-05 |
| 11,967 | Does Query Evaluation Tractability Help Query Containment? | 2014 | PODS | 4.1945683e-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 |
|---|---|---|---|---|
| 256 | GraphLog: a Visual Formalism for Real Life Recursion | 1990 | PODS | 0.00030259041 |
| 363 | A Graphical Query Language Supporting Recursion | 1987 | SIGMOD | 0.00025715157 |
| 407 | Conjunctive-Query Containment and Constraint Satisfaction | 1998 | PODS | 0.00024004562 |
| 431 | On the Complexity of Database Queries (Extended Abstract) | 1997 | PODS | 0.00023370207 |
| 810 | Query Containment for Conjunctive Queries With Regular Expressions | 1998 | PODS | 0.00016428374 |
| 1,414 | Graph Pattern Matching: From Intractable to Polynomial Time | 2010 | VLDB | 0.00012118275 |
| 1,812 | Expressive Languages for Path Queries over Graph-Structured Data | 2010 | PODS | 0.00010467069 |
| 8,851 | Efficient Approximations of Conjunctive Queries | 2012 | PODS | 4.4363908e-05 |
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Semantically Similar Papers
| Overall Rank | Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 8,410 | Charting the Tractability Frontier of Certain Conjunctive Query Answering | 2013 | PODS | 4.5204725e-05 |
| 2,727 | Semantic Query Optimization in the Presence of Types | 2010 | PODS | 8.2216778e-05 |
| 10,898 | Conjunctive Queries with Negation and Aggregation: A Linear Time Characterization | 2024 | PODS | 4.1945683e-05 |
| 11,967 | Does Query Evaluation Tractability Help Query Containment? | 2014 | PODS | 4.1945683e-05 |
| 10,357 | Rewriting Consistent Answers on Annotated Data | 2025 | PODS | 4.1945683e-05 |
| 3,371 | On the Enumeration Complexity of Unions of Conjunctive Queries | 2019 | PODS | 7.1696145e-05 |
| 8,966 | Output-sensitive Conjunctive Query Evaluation | 2024 | PODS | 4.4193184e-05 |
| 8,851 | Efficient Approximations of Conjunctive Queries | 2012 | PODS | 4.4363908e-05 |
| 1,037 | Querying Graph Databases | 2013 | PODS | 0.00014502493 |
| 11,829 | Semantic Acyclicity Under Constraints | 2016 | PODS | 4.1945683e-05 |