Defining Relations on Graphs: How Hard is it in the Presence of Node Partitions?
Summary: Analyze the definability problem on node-labeled graphs (node-partitions induced by value-equality) for extensions of regular path queries: REM and REE. Show REM definability EXPSPACE-complete, REE PSPACE-complete, and UCQ(REM/REE) coNP-complete. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. M. Praveen
- 2. B. Srivathsan
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| Rank | Cited Paper | Year | Venue | Pagerank |
|---|---|---|---|---|
| 1,040 | Querying Graph Databases | 2013 | PODS | 0.00014483577 |
| 1,094 | The Lixto Data Extraction Project - Back and Forth between Theory and Practice | 2004 | PODS | 0.00014105105 |
| 2,130 | Characterizing Schema Mappings via Data Examples | 2010 | PODS | 9.4784293e-05 |
| 3,872 | Designing and Refining Schema Mappings via Data Examples | 2011 | SIGMOD | 6.6737583e-05 |
| 6,857 | When is Naive Evaluation Possible? | 2013 | PODS | 4.9013761e-05 |
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