Linked data (LD) technology is hailed as a long-awaited solution in web-based information exchange. Linked Open Data (LOD) bring this to another level by enabling meaningful linking of resources and creating a global, openly accessible knowledge graph. Our case is the Universal Decimal Classification (UDC) and the challenges for a KOS service provider to maintain an LD service. UDC was created during the period 1896--1904 to support systematic organization and information retrieval of a bibliography. When discussing UDC as LD we make a distinction between two types of UDC data or two provenances: UDC source data, and UDC codes as they appear in metadata. To serve the purpose of supplying semantics one has to front--end UDC LD with a service that can parse and interpret complex UDC strings. While the use of UDC is free the publishing and distributing of UDC data is protected by a licence. Publishing of UDC both as LD and as LOD must be provided for within a complex service that would allow open access as well as access through a paywall barrier for different levels of licences. The practical task of publishing the UDC as LOD was informed by the '10Things guidelines'. The process includes conceptual parts and technological parts. The transition to a new technology is never a purely mechanical act but is a research endeavour in its own right. The UDC case has shown the importance of cross-domain, inter-disciplinary collaboration which needs experts well situated in multiple knowledge domains.
翻译:链接的数据(LD)技术在网上信息交流中被誉为期待已久的解决办法。链接的开放数据(LOD)通过建立有意义的资源链接和可公开获取的全球知识图表,将这一数据提升到另一个水平。我们的案例是通用十进制分类(UDC)和KOS服务供应商维持LD服务的挑战。UDC是在1896-1904年期间创建的,目的是支持系统组织和检索文献目录。当讨论UDC作为UDC的数据或两个来源时,我们区分了两种类型的UDC数据或两个来源:UDC源数据,以及元数据中出现的UDC代码。为提供语义学目的,必须先端UDCLDLD提供能够分析和解释复杂的UDC字符串的服务。虽然UDC的使用是免费的,但UDC数据的出版和发布得到许可。UDC的出版系统之间必须提供一种复杂的服务,允许公开查阅和通过工资墙屏障获得不同级别的许可证。在数据库中,一个实际的任务就是将概念化的流程包括了LODA的跨部。