Probability and statistics
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C4.5: programs for machine learning
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A scalable comparison-shopping agent for the World-Wide Web
AGENTS '97 Proceedings of the first international conference on Autonomous agents
Generating finite-state transducers for semi-structured data extraction from the Web
Information Systems - Special issue on semistructured data
Learning Information Extraction Rules for Semi-Structured and Free Text
Machine Learning - Special issue on natural language learning
Recognizing structure in Web pages using similarity queries
AAAI '99/IAAI '99 Proceedings of the sixteenth national conference on Artificial intelligence and the eleventh Innovative applications of artificial intelligence conference innovative applications of artificial intelligence
Regression testing for wrapper maintenance
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Inference of Reversible Languages
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Mixed-initiative, multi-source information assistants
Proceedings of the 10th international conference on World Wide Web
Hierarchical Wrapper Induction for Semistructured Information Sources
Autonomous Agents and Multi-Agent Systems
Learning Logical Definitions from Relations
Machine Learning
Electric Elves: Applying Agent Technology to Support Human Organizations
Proceedings of the Thirteenth Conference on Innovative Applications of Artificial Intelligence Conference
Probabilistic DFA Inference using Kullback-Leibler Divergence and Minimality
ICML '00 Proceedings of the Seventeenth International Conference on Machine Learning
Learning Stochastic Regular Grammars by Means of a State Merging Method
ICGI '94 Proceedings of the Second International Colloquium on Grammatical Inference and Applications
RoadRunner: Towards Automatic Data Extraction from Large Web Sites
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Learning the Common Structure of Data
Proceedings of the Seventeenth National Conference on Artificial Intelligence and Twelfth Conference on Innovative Applications of Artificial Intelligence
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Automatic Web Information Extraction in the ROADRUNNER System
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Getting from here to there: interactive planning and agent execution for optimizing travel
Eighteenth national conference on Artificial intelligence
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
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Using the structure of Web sites for automatic segmentation of tables
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Automatic information extraction from large websites
Journal of the ACM (JACM)
Efficient Wrapper Reinduction from Dynamic Web Sources
WI '04 Proceedings of the 2004 IEEE/WIC/ACM International Conference on Web Intelligence
Integrating Data from Disparate Sources: A Mass Collaboration Approach
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Automatic wrapper maintenance for semi-structured web sources using results from previous queries
Proceedings of the 2005 ACM symposium on Applied computing
Mapping maintenance for data integration systems
VLDB '05 Proceedings of the 31st international conference on Very large data bases
AutoFeed: an unsupervised learning system for generating webfeeds
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AI Magazine - Special issue on semantic integration
Adaptive web information extraction
Communications of the ACM - Two decades of the language-action perspective
An efficient algorithm for XML type projection
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Documentum ECI self-repairing wrappers: performance analysis
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Simultaneous record detection and attribute labeling in web data extraction
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eTuner: tuning schema matching software using synthetic scenarios
The VLDB Journal — The International Journal on Very Large Data Bases
Adapting Web information extraction knowledge via mining site-invariant and site-dependent features
ACM Transactions on Internet Technology (TOIT)
Transforming arbitrary tables into logical form with TARTAR
Data & Knowledge Engineering
Automatically maintaining wrappers for semi-structured web sources
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SERGEANT: A framework for building more flexible web agents by exploiting a search engine
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Webpage understanding: an integrated approach
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Automatically maintaining navigation sequences for querying semi-structured web sources
Data & Knowledge Engineering
Context-aware wrapping: synchronized data extraction
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
EDBT '08 Proceedings of the 11th international conference on Extending database technology: Advances in database technology
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Schema-Guided Induction of Monadic Queries
ICGI '08 Proceedings of the 9th international colloquium on Grammatical Inference: Algorithms and Applications
Automated Semantic Analysis of Schematic Data
World Wide Web
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International Journal of Computer Applications in Technology
Foundations and Trends in Databases
Incorporating site-level knowledge to extract structured data from web forums
Proceedings of the 18th international conference on World wide web
Fast, Accurate Creation of Data Validation Formats by End-User Developers
IS-EUD '09 Proceedings of the 2nd International Symposium on End-User Development
Robust web extraction: an approach based on a probabilistic tree-edit model
Proceedings of the 2009 ACM SIGMOD International Conference on Management of data
Detection of corrupted schema mappings in XML data integration systems
ACM Transactions on Internet Technology (TOIT)
Automatically labeling the inputs and outputs of web services
AAAI'06 proceedings of the 21st national conference on Artificial intelligence - Volume 2
Learning source descriptions for web services
AAAI'05 Proceedings of the 20th national conference on Artificial intelligence - Volume 4
Active learning with multiple views
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Deploying information agents on the web
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Automatically Constructing Semantic Web Services from Online Sources
ISWC '09 Proceedings of the 8th International Semantic Web Conference
Web Semantics: Science, Services and Agents on the World Wide Web
No Code Required: Giving Users Tools to Transform the Web
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Using latent-structure to detect objects on the web
Procceedings of the 13th International Workshop on the Web and Databases
Entity ranking in Wikipedia: utilising categories, links and topic difficulty prediction
Information Retrieval
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AI*IA'11 Proceedings of the 12th international conference on Artificial intelligence around man and beyond
Wrapper Generation for Overlapping Web Sources
WI-IAT '11 Proceedings of the 2011 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Volume 01
Mechanisms of knowledge evolution for web information extraction
Proceedings of the 2005 international conference on Federation over the Web
ASWC'06 Proceedings of the First Asian conference on The Semantic Web
Maintaining web navigation flows for wrappers
DEECS'06 Proceedings of the Second international conference on Data Engineering Issues in E-Commerce and Services
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Search Computing
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Applied Intelligence
WebSelF: a web scraping framework
ICWE'12 Proceedings of the 12th international conference on Web Engineering
TEX: An efficient and effective unsupervised Web information extractor
Knowledge-Based Systems
Intelligent and adaptive crawling of web applications for web archiving
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The proliferation of online information sources has led to an increased use of wrappers for extracting data from Web sources. While most of the previous research has focused on quick and efficient generation of wrappers, the development of tools for wrapper maintenance has received less attention. This is an important research problem because Web sources often change in ways that prevent the wrappers from extracting data correctly. We present an efficient algorithm that learns structural information about data from positive examples alone. We describe how this information can be used for two wrapper maintenance applications: wrapper verification and reinduction. The wrapper verification system detects when a wrapper is not extracting correct data, usually because the Web source has changed its format. The reinduction algorithm automatically recovers from changes in the Web source by identifying data on Web pages so that a new wrapper may be generated for this source. To validate our approach, we monitored 27 wrappers over a period of a year. The verification algorithm correctly discovered 35 of the 37 wrapper changes, and made 16 mistakes, resulting in precision of 0.73 and recall of 0.95. We validated the reinduction algorithm on ten Web sources. We were able to successfully reinduce the wrappers, obtaining precision and recall values of 0.90 and 0.80 on the data extraction task.