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A Metastructure for Thesauri in Archeology

Controlled terminology becomes increasingly important for archeological documentation and information retrieval in wide area networks. Even though there is a vast literature on thesaurus creation, the logical organization, the "metastructure" of a thesaurus is still rather unreflected, in particular in the more abstract layers. So-called facet indicators are distributed intuitively in order to group a set of sibling terms by an implicit property. They can be regarded as potential elements of a metastructure. The Greek Ministry of Culture is developing a general purpose thesaurus for archeology in cooperation with ICS-FORTH. Based on contextual and phenomenal notions, an extensible, systematic metastructure for terminology in archeology is proposed, which seems to be more comprehensive than traditional approaches. This paper discusses the benefits of such an approach. In particular, the proposed structure seems to provide a better understanding of the implicit criteria intrinsic to object classification terms and the relation between compound expressions and traditional terms.