TEGRA: Table Extraction by Global Record Alignment

Summary: TEGRA extracts multi-column relational tables from list-style web content, not only HTML tables. It quantifies column coherence with a 100M-table web corpus and casts extraction as a fixed-column token assignment that maximizes intra-column coherence via a 2-approximation (A*-like) algorithm; achieves 90%+ F-measure on web and enterprise data. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: 5007
Venue: SIGMOD
Year: 2015
Pagerank: 7.2958137e-05
Overall Rank: 3,574 | 75.49%
DOI: 10.1145/2723372.2723725

Incoming Non-self Citations Over Time

Authors

1. Xu Chu (University of Waterloo)
2. Yeye He (Microsoft)
3. Kaushik Chakrabarti (Microsoft)
4. Kris Ganjam (Microsoft)

BibTeX Citation

@inproceedings{chu_sigmod15,
        title = {{TEGRA: Table Extraction by Global Record Alignment}},
        author = {Chu, Xu and He, Yeye and Chakrabarti, Kaushik and Ganjam, Kris},
        series = {{SIGMOD} '15},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/2723372.2723725},
        url = {https://dl.acm.org/doi/10.1145/2723372.2723725},
        year = {2015}
}

Incoming Citations (Sorted by Pagerank)

Showing 11 of 11 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
1,160	BlinkFill: Semi-supervised Programming By Example for Syntactic String Transformations	2016	VLDB	0.00011883163
2,099	Table-GPT: Table Fine-tuned GPT for Diverse Table Tasks	2024	SIGMOD	9.1682353e-05
2,728	Uni-Detect: A Unified Approach to Automated Error Detection in Tables	2019	SIGMOD	8.1995954e-05
2,744	Auto-Suggest: Learning-to-Recommend Data Preparation Steps Using Data Science Notebooks	2020	SIGMOD	8.1781662e-05
3,147	Auto-Detect: Data-Driven Error Detection in Tables	2018	SIGMOD	7.7077175e-05
3,271	Ten Years of WebTables	2018	VLDB	7.5779937e-05
4,168	Pytheas: Pattern-based Table Discovery in CSV Files	2020	VLDB	6.8570481e-05
5,915	WADaR: Joint Wrapper and Data Repair	2015	VLDB	6.0437843e-05
6,436	Synthesizing Type-Detection Logic for Rich Semantic Data Types using Open-source Code	2018	SIGMOD	5.8793793e-05
9,395	Web Record Extraction with Invariants	2023	VLDB	5.2755515e-05
10,414	Visual Template Inference for Data Extraction from Documents	2026	SIGMOD	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 9 of 9 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
65	Freebase: A Collaboratively Created Graph Database For Structuring Human Knowledge	2008	SIGMOD	0.00038697603
91	WebTables: Exploring the Power of Tables on the Web	2008	VLDB	0.00034838835
367	InfoGather: Entity Augmentation and Attribute Discovery By Holistic Matching with Web Tables	2012	SIGMOD	0.00019979463
493	Data Integration for the Relational Web	2009	VLDB	0.00017558709
717	Automatic segmentation of text into structured records	2001	SIGMOD	0.00014649121
1,316	Harvesting Relational Tables from Lists on the Web	2009	VLDB	0.00011181216
1,684	Answering Table Augmentation Queries from Unstructured Lists on the Web [Extended Abstract]	2009	VLDB	0.0001001843
3,181	InfoGather+: Semantic Matching and Annotation of Numeric and Time-Varying Attributes in Web Tables	2013	SIGMOD	7.6595256e-05
5,554	Joint Unsupervised Structure Discovery and Information Extraction	2011	SIGMOD	6.1775485e-05

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