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RoadRunner: Towards Automatic Data Extraction from Large Web Sites

Summary: RoadRunner enables automatic data extraction from large web sites by generating wrappers via HTML page similarity/difference analysis. Real-world data-intensive site experiments demonstrate feasibility and scalability of the wrapper generation approach. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
hbdba100378cdcac0
Venue
VLDB
Year
2001
Pagerank
0.00016970049
Overall Rank
515 | 96.54%
DOI
-

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@article{crescenzi_vldb01,
        title = {{RoadRunner: Towards Automatic Data Extraction from Large Web Sites}},
        author = {Crescenzi, Valter and Mecca, Giansalvatore and Merialdo, Paolo},
        journal = {PVLDB},
        series = {{VLDB} '01},
        year = {2001}
}

Incoming Citations (Sorted by Pagerank)

Showing 31 of 31 citing papers.

Rank Citing Paper Year Venue Pagerank
599 Extracting Structured Data from Web Pages 2003 SIGMOD 0.0001575536
622 On the Provenance of Non-Answers to Queries over Extracted Data 2008 VLDB 0.00015484312
1,337 Harvesting Relational Tables from Lists on the Web 2009 VLDB 0.00010987014
1,917 A Web of Concepts 2009 PODS 9.3790758e-05
2,120 An Analysis of Structured Data on the Web 2012 VLDB 9.0098024e-05
2,417 Instance-based Schema Matching for Web Databases by Domain-specific Query Probing 2004 VLDB 8.4930877e-05
2,599 Understanding Web Query Interfaces: Best-Effort Parsing with Hidden Syntax 2004 SIGMOD 8.2364103e-05
3,395 Automatic Wrappers for Large Scale Web Extraction 2011 VLDB 7.3436783e-05
3,568 Context-Aware Wrapping: Synchronized Data Extraction 2007 VLDB 7.200842e-05
3,588 Using the Structure of Web Sites for Automatic Segmentation of Tables 2004 SIGMOD 7.1870903e-05
3,759 Toward Large Scale Integration: Building a MetaQuerier over Databases on the Web 2005 CIDR 7.0430209e-05
3,912 Navigating the Data Lake with DATAMARAN: Automatically Extracting Structure from Log Datasets 2018 SIGMOD 6.9306061e-05
3,974 On the Complexity of Deriving Schema Mappings from Database Instances 2008 PODS 6.8868916e-05
4,010 Exploiting Content Redundancy for Web Information Extraction 2010 VLDB 6.8582009e-05
4,021 Robust Web Extraction: An Approach Based on a Probabilistic Tree-Edit Model 2009 SIGMOD 6.8498852e-05
5,319 Object-level Vertical Search 2007 CIDR 6.182759e-05
5,712 Documentum ECI Self-Repairing Wrappers: Performance Analysis 2006 SIGMOD 6.0218509e-05
6,015 WADaR: Joint Wrapper and Data Repair 2015 VLDB 5.9135138e-05
6,104 From Information to Knowledge: Harvesting Entities and Relationships from Web Sources 2010 PODS 5.886265e-05
6,398 CERES: Distantly Supervised Relation Extraction from the Semi-Structured Web 2018 VLDB 5.7984902e-05
6,774 Optimal Schemes for Robust Web Extraction 2011 VLDB 5.6855924e-05
6,841 RoadRunner: Automatic Data Extraction from Data-Intensive Web Sites 2002 SIGMOD 5.6668827e-05
6,947 Web Data Extraction using Hybrid Program Synthesis: A Combination of Top-down and Bottom-up Inference 2020 SIGMOD 5.6369918e-05
7,579 Visual Segmentation for Information Extraction from Heterogeneous Visually Rich Documents 2019 SIGMOD 5.4921926e-05
7,972 The Smallest Extraction Problem 2021 VLDB 5.4150414e-05
8,135 DEXTER: Large-Scale Discovery and Extraction of Product Specifications on the Web 2015 VLDB 5.3928122e-05
9,042 Measuring the Structural Similarity of Semistructured Documents Using Entropy 2007 VLDB 5.2318346e-05
12,744 ObjectRunner: Lightweight, Targeted Extraction and Querying of Structured Web Data 2010 VLDB 4.9793485e-05
12,766 Building Ranked Mashups of Unstructured Sources with Uncertain Information 2010 VLDB 4.9793485e-05
13,008 Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages 2006 VLDB 4.9793485e-05
13,073 An Automatic Data Grabber for Large Web Sites 2004 VLDB 4.9793485e-05
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Outgoing Citations (Sorted by Pagerank)

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
832 NoDoSE - A Tool for Semi-Automatically Extracting Structured and Semistructured Data from Text Documents. 1998 SIGMOD 0.00013584281
2,763 Cut and Paste 1997 PODS 8.044061e-05
2,785 To Weave the Web 1997 VLDB 8.0177508e-05
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Semantically Similar Papers

# Overall Rank Paper Year Venue
1 2,374 Record-Boundary Discovery in Web Documents 1999 SIGMOD
2 599 Extracting Structured Data from Web Pages 2003 SIGMOD
3 4,021 Robust Web Extraction: An Approach Based on a Probabilistic Tree-Edit Model 2009 SIGMOD
4 8,725 An XML-based Wrapper Generator for Web Information Extraction 1999 SIGMOD
5 13,008 Automatic Extraction of Dynamic Record Sections From Search Engine Result Pages 2006 VLDB
6 6,774 Optimal Schemes for Robust Web Extraction 2011 VLDB
7 3,395 Automatic Wrappers for Large Scale Web Extraction 2011 VLDB
8 12,744 ObjectRunner: Lightweight, Targeted Extraction and Querying of Structured Web Data 2010 VLDB
9 13,073 An Automatic Data Grabber for Large Web Sites 2004 VLDB
10 6,841 RoadRunner: Automatic Data Extraction from Data-Intensive Web Sites 2002 SIGMOD