Abstract
Knowledge organization systems denotes formally represented knowledge that is used within the context of digital libraries to improve data sharing and information retrieval. To increase their use, and to reuse them when possible, it is vital to manage them adequately and to provide them in a standard interchange format. Simple knowledge organization systems (SKOS) seem to be the most promising representation for the type of knowledge models used in digital libraries, but there is a lack of tools that are able to properly manage it. This work presents a tool that fills this gap, facilitating their use in different environments and using SKOS as an interchange format.
Highlights
To increase their use, and to reuse them when possible, it is vital to manage them adequately and to provide them in a standard interchange format
The interrelation component has been conceived as an independent module that receives a thesaurus as input in Simple knowledge organization systems (SKOS) and returns the relation respect to concept core using an extended version of the SKOS Mapping model (Miles and Brickley 2004)
The tool groups a subset of the provided components, relating them to obtain a final user application that allows the management of the stored thesauri, their visualization, their edition, and their importation and exportation using SKOS format
Summary
Thesauri vary enormously in size, ranging from hundreds of concepts and properties to millions. The time spent on load, navigation, and search processes are a functional restriction for a tool that has to manage them. SKOS is RDF-based, and because reading RDF to extract the con tent is a slow process, the format is not appropriate for inner storage. To provide better access time, ThManager transforms SKOS into a binary format when a new SKOS is imported. The persistence layer provides a unified access to the thesaurus repository. This layer is used by the GUI layer dc:title dcterms:alternative dc:subject dc:subject dc:subject dc:subject dc:creator dc:creator dc:publisher dc:contributor dc:description dc:date dc:type dc:format dc:identifier dc:source dc:language dc:relation dc:rights
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