Abstract
Information is often imprecise and uncertain in many real-world applications, and thus fuzzy data modeling has been extensively investigated in various database models as introduced in Chap. 2. Currently, huge amounts of electronic data are available on the Internet, and XML has been the de facto standard of information representation and exchange over the Web. Unfortunately, XML is not able to represent and process imprecise and uncertain data. To represent and manage the imprecise and uncertain data, Zadeh’s fuzzy set theory has been introduced into XML to extend XML such that uncertain and imprecise information can be represented and manipulated. The extended XML model together with the fuzzy database models introduced in Chap. 2 are the key techniques for managing fuzzy data. In this chapter, we mainly introduce fuzzy XML data model.KeywordsMembership DegreePossibility DistributionFuzzy DataDocument Type DefinitionPossibility DegreeThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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