Document (#27188)

Author
Widhalm, R.
Mueck, T.A.
Title
Merging topics in well-formed XML topic maps
Source
The Semantic Web - ISWC 2003. Eds. D. Fensel et al
Imprint
Berlin : Springer
Year
2003
Pages
S.64-79
Series
Lecture notes in computer science; vol. 2870
Abstract
Topic Maps are a standardized modelling approach for the semantic annotation and description of WWW resources. They enable an improved search and navigational access on information objects stored in semi-structured information spaces like the WWW. However, the according standards ISO 13250 and XTM (XML Topic Maps) lack formal semantics, several questions concerning e.g. subclassing, inheritance or merging of topics are left open. The proposed TMUML meta model, directly derived from the well known UML meta model, is a meta model for Topic Maps which enables semantic constraints to be formulated in OCL (object constraint language) in order to answer such open questions and overcome possible inconsistencies in Topic Map repositories. We will examine the XTM merging conditions and show, in several examples, how the TMUML meta model enables semantic constraints for Topic Map merging to be formulated in OCL. Finally, we will show how the TM validation process, i.e., checking if a Topic Map is well formed, includes our merging conditions.
Theme
Wissensrepräsentation
Semantische Interoperabilität
Object
Topic maps

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