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Thesauri have long been recognized as valuable structured resources aiding Information Retrieval systems. A thesaurus provides a precise and controlled vocabulary which serves to coordinate data indexing and retrieval. The paper presents a bilingual Greek and English specialized thesaurus that is being developed as the backbone of a platform aimed at enhancing and enriching the cultural experiences of visitors in Eastern Macedonia and Thrace, Greece. The cultural component of the intended platform comprises textual data, images of artifacts and living entities (animals and plants in the area), as well as audio and video. The thesaurus covers the domains of Archaeology, Literature, Mythology, and Travel; therefore, it can be viewed as a set of inter-linked thesauri. Where applicable, terms and names in the database are also geo-referenced.
This paper reports on the restructuring of a bilingual (Greek Sign Language, GSL – Modern Greek) lexicographic database with the use of the WordNet semantic and lexical database. The relevant research was carried out by the Institute for Language and Speech Processing (ILSP) / Athena R.C. team within the framework of the European project Easier. The project will produce a framework for intelligent machine translation to bring down language barriers among several spoken/written and sign languages. This paper describes the experience of the ILSP team to contribute to a multilingual repository of signs and their corresponding translations and to organize and enhance a bilingual dictionary (GSL – Modern Greek) as a result of this mapping; this will be the main focus of this paper. The methodology followed relies on the use of WordNet and, more specifically, the Open Multilingual WordNet (OMW) tool to map content in GSL to WordNet synsets.