The Nippon Decimal Classification Linked Data Project: Utilizing semantic web technologies

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  • 日本十進分類法のLinked Data化：セマンティックWebへの対応を目指して
  • ニホン ジッシン ブンルイホウ ノ Linked Dataカ : セマンティック Web エ ノ タイオウ オ メザシテ

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Abstract

This paper describes a cooperative research project by the Japan Library Association (JLA) and the National Diet Library (NDL) to create Linked Data for the Nippon Decimal Classification (NDC). The NDC is a Japanese standard classification system that is edited and published by the JLA. This project was carried out from April 2015 to March 2016, during which time the 8th and 9th editions of the NDC were converted on a trial basis from Machine Readable Data Format (MRDF) to the Linked Data format. The authors first established a conversion policy based on the anticipated needs of patrons to utilize the data in an information system and then developed a hierarchical structure model for NDC classes, a metadata schema for NDC semantics, and a label with contexts. In addition, the authors also synthesized the classes with auxiliary tables and generated classes automatically from a relative index and other resources. NDC Linked Data also references National Diet Library Subject Headings as external data. After evaluating the outcome of this project, the JLA will conduct further research into the provision and use of NDC Linked Data.

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