WADaR: Joint Wrapper and Data Repair

Summary: WADaR is a scalable tool for joint wrapper and data repair in web-scraped relations. It uses off-the-shelf entity recognizers to locate targets and Markov-chain repairs to fix data and wrappers; yields 15–60% quality gains and full wrapper repair in >50% without site knowledge. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID: h6873818dbfaab158
Venue: VLDB
Year: 2015
Pagerank: 5.9135138e-05
Overall Rank: 6,015 | 59.56%
DOI: 10.14778/2824032.2824120

Incoming Non-self Citations Over Time

Authors

1. Stefano Ortona (University of Oxford)
2. Giorgio Orsi (University of Oxford)
3. Marcello Buoncristiano (University of Basilicata)
4. Tim Furche (University of Oxford)

BibTeX Citation

@article{ortona_vldb15,
        title = {{WADaR: Joint Wrapper and Data Repair}},
        author = {Ortona, Stefano and Orsi, Giorgio and Buoncristiano, Marcello and Furche, Tim},
        journal = {PVLDB},
        series = {{VLDB} '15},
        volume = {8},
        number = {12},
        doi = {10.14778/2824032.2824120},
        url = {https://doi.org/10.14778/2824032.2824120},
        year = {2015}
}

Incoming Citations (Sorted by Pagerank)

Showing 4 of 4 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
2,641	Auto-Suggest: Learning-to-Recommend Data Preparation Steps Using Data Science Notebooks	2020	SIGMOD	8.1787073e-05
6,398	CERES: Distantly Supervised Relation Extraction from the Semi-Structured Web	2018	VLDB	5.7984902e-05
7,972	The Smallest Extraction Problem	2021	VLDB	5.4150414e-05
9,578	Web Record Extraction with Invariants	2023	VLDB	5.1571823e-05

Outgoing Citations (Sorted by Pagerank)

Showing 7 of 7 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
515	RoadRunner: Towards Automatic Data Extraction from Large Web Sites	2001	VLDB	0.00016970049
2,255	Extraction and Integration of Partially Overlapping Web Sources	2013	VLDB	8.7442418e-05
3,568	Context-Aware Wrapping: Synchronized Data Extraction	2007	VLDB	7.200842e-05
3,615	TEGRA: Table Extraction by Global Record Alignment	2015	SIGMOD	7.1591776e-05
4,143	Hybrid In-Database Inference for Declarative Information Extraction	2011	SIGMOD	6.7813891e-05
5,866	DIADEM: Thousands of Websites to a Single Database	2014	VLDB	5.9657279e-05
12,573	Aggregating Semantic Annotators	2013	VLDB	4.9793485e-05

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	515	RoadRunner: Towards Automatic Data Extraction from Large Web Sites	2001	VLDB
2	6,774	Optimal Schemes for Robust Web Extraction	2011	VLDB
3	9,354	Robust and Noise Resistant Wrapper Induction	2016	SIGMOD
4	4,021	Robust Web Extraction: An Approach Based on a Probabilistic Tree-Edit Model	2009	SIGMOD
5	6,841	RoadRunner: Automatic Data Extraction from Data-Intensive Web Sites	2002	SIGMOD
6	3,395	Automatic Wrappers for Large Scale Web Extraction	2011	VLDB
7	2,255	Extraction and Integration of Partially Overlapping Web Sources	2013	VLDB
8	8,476	DADER: Hands-Off Entity Resolution with Domain Adaptation	2022	VLDB
9	5,866	DIADEM: Thousands of Websites to a Single Database	2014	VLDB
10	8,725	An XML-based Wrapper Generator for Web Information Extraction	1999	SIGMOD