The Evaluation of Content-Based Web Queries

Fiebig, Thorsten ; Moerkotte, Guido

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URN: urn:nbn:de:bsz:180-madoc-17465
Document Type: Working paper
Year of publication: 1998
The title of a journal, publication series: Technical Reports
Volume: 98-002
Place of publication: Mannheim
Publication language: English
Institution: School of Business Informatics and Mathematics > Sonstige - Fakultät für Wirtschaftsinformatik und Wirtschaftsmathematik
MADOC publication series: Veröffentlichungen der Fakultät für Mathematik und Informatik > Institut für Informatik > Technical Reports
Subject: 004 Computer science, internet
Subject headings (SWD): Content <Internet> , Evaluation , Strukturierte Daten
Abstract: We introduce the notions of syntactically and semantically structured data to refine the notion of semi-structured data. As we will see, most data found on the Web is syntactically structured. In order to evaluate content-based Web queries, semantically structured data is needed. The problem occurs to transform syntactically structured data into semantically structured data. Syntactically and semantically structured data can be represented by trees. Our main contribution is a powerful restructuring mechanism that allows to express the transformation of trees representing syntactically structured data to trees that represent semantically structured data. We embed our restructuring mechanism into RAW (Relational Algebra for the Web) and demonstrate its expressiveness by several example queries.
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