Testability of Homomorphism Inadmissibility: Property Testing Meets Database Theory
Summary: Apply property testing to homomorphism inadmissibility for conjunctive queries: with constant queries and one-sided error, distinguish A→B from B that is far (needs deleting a constant fraction of tuples) from admitting a homomorphism. Main result: constant-query one-sided testability iff core(A) is α-acyclic; injective variant also testable for α-acyclic A, subsuming subgraph-freeness results. (summarized by gpt-5-mini on Feb 09 2026)
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Authors
- 1. Hubie Chen (Birkbeck, University of London)
- 2. Yuichi Yoshida (National Institute of Informatics)
BibTeX Citation
@inproceedings{chen_pods19,
address = {New York, NY, USA},
series = {{PODS} '19},
title = {{Testability of Homomorphism Inadmissibility: Property Testing Meets Database Theory}},
url = {https://dl.acm.org/doi/10.1145/3294052.3319679},
doi = {10.1145/3294052.3319679},
booktitle = {Proceedings of the {ACM} {SIGMOD} Symposium on {Principles} of {Database} {Systems}},
publisher = {Association for Computing Machinery},
author = {Chen, Hubie and Yoshida, Yuichi},
year = {2019}
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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 |
|---|---|---|---|---|
| 310 | Optimization of Real Conjunctive Queries | 1993 | PODS | 0.00021374145 |
| 421 | On the Complexity of Database Queries (Extended Abstract) | 1997 | PODS | 0.00018516535 |
| 12,520 | The Fine Classification of Conjunctive Queries and Parameterized Logarithmic Space Complexity | 2013 | PODS | 4.9793485e-05 |
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