As one team has created the above equivalences, the differences must be attributed to the nature of the target vocabularies and not to differences in the practice of the editors. Crofts "Electronic Esperanto: Rada "Merging Thesauri: Of course, we are aware that this may become quite labor intensive if no automatic methods are found. This is an example of the proposal illustrated in Figure 5. The use of subsumption relations, not for the concept itself but for use-dependent derivatives. Metadata for thesauri and the services employing mappings should sufficiently define the properties and methodological principles needed for coherent, dynamic information integration services. English, for instance, is full of so-called homonyms or contrastive ambiguity Pustejovsky , like: Whether goods are subject to restrictions at import or export Avoid delays or seizures To avoid penalties and post-entry audit issues The Importer is responsible for correctly classifying their goods on import and export.
In this case, Greek person is interpreted as Person. The use and notation of different kinds of hierarchical relations, which are not transitive among each other. The above narrower equivalence should be maximal, i. Some can be avoided, either by better awareness of the thesaurus providers or by specific reasoning services. Subject terms used for library cataloging are sometimes interpreted as applying to books which cover the breadth of the term. Such difficulties seem to be often ignored by technicians or taken as unavoidable vagueness of human argument. Here is an area for further applied research. So a query using such a term would simply fail against the respective target. One could as well start with color or provenance. The idea can be stated in the following rules: The use of subsumption relations, not for the concept itself but for use-dependent derivatives. Kalomoirakis "A Metastructure for Thesauri in Archeology". Knowledge and Data Engineering, 31 2 , September, Z Rules 2 and 3 above define a notion of an "optimal mapping" in the sense that no closer mapping can be found with these kinds of expressions. Whether goods are subject to restrictions at import or export Avoid delays or seizures To avoid penalties and post-entry audit issues The Importer is responsible for correctly classifying their goods on import and export. Carmine does not appear at all under its characteristic color, because priority was given to other prominent features carmine is used for dye and pigment. In a student project, we have created an experimental colorant hierarchy, where each colorant was put directly under three broader terms: They consist of a 10 digit code for imports or an 8 digit code for exports. The above sequencing structure seems to have placed the two terms arbitrarily. Hence it is fairly difficult to reconstruct the missing terms and their broader terms, a major obstacle to thesaurus mapping and federation - but neither can precoordination be seen as a solution, because it overloads thesauri. He talks about the Qualia Structure of nominals, which he analyses in the following main categories referring also to Aristotle's notion of modes of explanation: Hence they inherit the partial order relation from the subsumption of the respective sets, form poly hierarchies, and are therefore frequently mistaken for broader terms. The mechanism was verified with term combination from the equivalence expressions between the editions of the French Merimee "Thesaurus Architecture" and the AAT listed in the Appendix. When classifying the product it is important to understand; the make-up of the product, its function, how it is presented at import, if it is an unassembled or unfinished product and the essential character of the product. Our laboratory has implemented a research prototype Ntoas on top of the thesaurus management system SIS-TMS Doerr and Fundulaki a , which indexes expressions containing Boolean operators and role restriction "restrict [p,C]" and relates them to their immediate broader and narrower terms.
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