Relational Deep Dive: Error-Aware Queries Over Unstructured Data

Summary: ReDD dynamically discovers query-specific, joinable schemas and populates relational tables from unstructured corpora using LLMs plus hidden-state classifiers. SCAPE provides calibrated error detection with coverage guarantees, enabling accuracy–human-cost trade-offs and reducing extraction errors below 1%. (summarized by gpt-5.6-luna on Jul 09 2026)

Paper ID: h5781ba1b2a4ac188
Venue: VLDB
Year: 2026
Pagerank: 5.2905577e-05
Overall Rank: 8,679 | 41.65%
DOI: 10.14778/3811243.3811256

Incoming Non-self Citations Over Time

Authors

1. Daren Chao (University of Toronto)
2. Kaiwen Chen (University of Toronto)
3. Naiqing Guan (University of Toronto)
4. Nick Koudas (University of Toronto)

BibTeX Citation

@article{chao_vldb26,
        title = {{Relational Deep Dive: Error-Aware Queries Over Unstructured Data}},
        author = {Chao, Daren and Chen, Kaiwen and Guan, Naiqing and Koudas, Nick},
        journal = {PVLDB},
        series = {{VLDB} '26},
        volume = {19},
        number = {8},
        pages = {1840--1853},
        doi = {10.14778/3811243.3811256},
        url = {https://doi.org/10.14778/3811243.3811256},
        year = {2026}
}

Incoming Citations (Sorted by Pagerank)

Showing 1 of 1 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
10,960	QuWARTS: Query Workload Aware Relational Table Synthesis from Unstructured Text	2026	VLDB	4.9793485e-05

Outgoing Citations (Sorted by Pagerank)

Showing 12 of 12 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

Rank	Cited Paper	Year	Venue	Pagerank
501	Language Models Enable Simple Systems for Generating Structured Views of Heterogeneous Data Lakes	2024	VLDB	0.00017267905
669	CAESURA: Language Models as Multi-Modal Query Planners	2024	CIDR	0.0001495987
683	DocETL: Agentic Query Rewriting and Evaluation for Complex Document Processing	2025	VLDB	0.00014817539
748	Palimpzest: Optimizing AI-Powered Analytics with Declarative Query Processing	2025	CIDR	0.00014281926
2,341	The Design of an LLM-powered Unstructured Analytics System	2025	CIDR	8.6066183e-05
2,606	Text2SQL is Not Enough: Unifying AI and Databases with TAG	2025	CIDR	8.2295646e-05
3,743	Logical and Physical Optimizations for SQL Query Execution over Large Language Models	2025	SIGMOD	7.0586112e-05
3,925	Pneuma: Leveraging LLMs for Tabular Data Representation and Retrieval in an End-to-End System	2025	SIGMOD	6.9214086e-05
5,410	ELEET: Efficient Learned Query Execution over Text and Tables	2024	VLDB	6.1408676e-05
6,379	Unify: A System For Unstructured Data Analytics	2025	VLDB	5.8083127e-05
6,945	PalimpChat: Declarative and Interactive AI analytics	2025	SIGMOD	5.6378669e-05
7,012	Reliable Text-to-SQL with Adaptive Abstention	2025	SIGMOD	5.6218378e-05

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