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XML Declarative Description

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dc.contributor.advisor Wuwongse, Vilas
dc.contributor.author Anutariya, Chutiporn
dc.contributor.other Haddawy, Peter
dc.contributor.other Sanguankotchakorn, Theerapat
dc.contributor.other Prof. Peter W. Eklund
dc.date.accessioned 2015-05-13T09:03:36Z
dc.date.available 2015-05-13T09:03:36Z
dc.date.issued 2000-12
dc.identifier.other AIT Diss no.CS-01-03
dc.identifier.uri http://www.cs.ait.ac.th/xmlui/handle/123456789/756
dc.description 111 p. en_US
dc.description.abstract XML is a description format for encoding and exchange of structured data and documents on the Web, which lacks a computation mechanism as well as expressiveness by not allowing specification of domain knowledge, axioms, conditional relationships and con-straints. Existing approaches to the removal of these limitations demand certain extensions as well as integration of additional formalisms, which not only complicate their syntax and semantics, but also their understanding. With the aim of removal of these defects, XML Declarative Description (XDD)—an expressive knowledge representation with precise, well-defined semantics and efficient computation mechanism—employs XML’s nested tree structure as its underlying data structure and Declarative Description theory as a framework to enhance its expressive power. It enables direct representation of data items, encoded in XML-based application markup languages, and extends their expressiveness by facilitation of simple means for succinct and uniform expression of implicit information, integrity constraints, conditional relationships and axioms. In addition, it allows their semantics to be determined directly, and also provides efficient computation by means of Equivalent Transformation (ET). Thus, with its simplicity, yet flexibility, generality and expressiveness, XDD embraces those existing approaches and can serve as their foundation for representation and compu-tation. XDD can be applied to diverse areas including XML document manipulation, database management, query formulation and evaluation as well as Semantic Web modeling and programming. Application of XDD to XML (document) database modeling allows the three compo-nents of an XML database—an extensional database, an intensional database, and struc-tural and integrity constraints—to be formalized simply as an XDD description; its semantics is a set of XML elements which are explicitly described by the extensional data-base or implicitly derived from the database, based on the defined intensional database, and which satisfy all the specified constraints. Thus, selective and complex queries, regarding information satisfying certain criteria and possibly implicit in the database, for-mulated as XDD descriptions, become expressible and computable. Moreover, since a DTD or an XML Schema can be represented by a corresponding XDD description, it also yields an algorithm for validation of document conformance. XDD thereby serves as an effective and well-founded XML database framework with succinct representational and operational uniformity, reasoning capabilities and deductive query supports. The present XDD approach to modeling of Semantic Web resources and applications demonstrates that every component of Semantic Web resources—constraints, ontologies and contents—and of Semantic Web applications—application data, application rules and queries/requests—can be represented uniformly as an XDD description. en_US
dc.description.sponsorship Royal Thai Government en_US
dc.publisher AIT en_US
dc.title XML Declarative Description en_US
dc.type Dissertation en_US


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