Ontology-based extraction and structuring of information from data-rich unstructured documents
Proceedings of the seventh international conference on Information and knowledge management
A brief survey of web data extraction tools
ACM SIGMOD Record
Visual Web Information Extraction with Lixto
Proceedings of the 27th International Conference on Very Large Data Bases
RoadRunner: Towards Automatic Data Extraction from Large Web Sites
Proceedings of the 27th International Conference on Very Large Data Bases
Toolkits for Generating Wrappers
NODe '02 Revised Papers from the International Conference NetObjectDays on Objects, Components, Architectures, Services, and Applications for a Networked World
Data extraction and label assignment for web databases
WWW '03 Proceedings of the 12th international conference on World Wide Web
Data & Knowledge Engineering
Automatic complex schema matching across Web query interfaces: A correlation mining approach
ACM Transactions on Database Systems (TODS)
A Survey of Web Information Extraction Systems
IEEE Transactions on Knowledge and Data Engineering
MashMaker: mashups for the masses
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Chapter 6: web data extraction for service creation
Search Computing
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We present Metamorph, a system and framework for generating vertical deep Web search engines in a knowledge-based way. The approach enables the separation between the roles of a higher skilled ontology engineer and a less skilled service engineer, which adds new web sources in an intuitive, semi-automatic manner using the proven Lixto suite. One part of the framework is the understanding process for complex web search forms, and the generation of an ontological representation of each form and its intrinsic run-time dependencies. Based on these representations, a unified meta form and matchings from the meta form to the individual search forms and vice versa are created, taking into account different form element types, contents and labels. We discuss several aspects of the Metamorph ontology, which focuses especially on the interaction semantics of web forms, and give a short account of our semi-automatic tagging system.