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JSON-LD : ウィキペディア英語版
JSON-LD

JSON-LD, or JavaScript Object Notation for Linked Data, is a method of transporting Linked Data using JSON. It was a goal to require as little effort as possible from developers to transform their existing JSON to JSON-LD.〔(【引用サイトリンク】title=JSON-LD Syntax 1.0 )〕 This allows data to be serialized in a way that is similar to traditional JSON.〔, M. Lanthaler and C. Gütl in Proceedings of the 3rd International Workshop on RESTful Design (WS-REST 2012) at WWW2012.〕 It is a World Wide Web Consortium Recommendation that has been developed by the (JSON for Linking Data Community Group ) before it has been transferred to the RDF Working Group〔(RDF Working Group ) This Working Group ended its activities on 1 July 2014 and is now closed.〕 for review, improvement, and standardization.
JSON-LD is designed around the concept of a "context" to provide additional mappings from JSON to an RDF model. The context links object properties in a JSON document to concepts in an ontology. In order to map the JSON-LD syntax to RDF, JSON-LD allows values to be coerced to a specified type or to be tagged with a language. A context can be embedded directly in a JSON-LD document or put into a separate file and referenced from different documents (from traditional JSON documents via an HTTP Link header).
==Example==


,
"@id": "http://me.example.com",
"@type": "Person",
"name": "John Smith",
"homepage": "http://www.example.com/"
}

The example above describes a person, based on the FOAF vocabulary. First, the two JSON properties name and homepage and the type person are mapped to concepts in the FOAF vocabulary and the value of the homepage property is specified to be of the type @id, i.e., it is specified to be an IRI in the context definition. Based on the RDF model, this allows the person described in the document to be unambiguously identified by an IRI. The use of resolvable IRIs allows RDF documents containing more information to be transcluded which enables clients to discover new data by simply following those links; this principle is known as Follow Your Nose.〔(【引用サイトリンク】title=Linked Data Patterns, Chapter 5: Follow Your Nose )
By having all data semantically annotated as in the example, an RDF processor can identify that the document contains information about a person (@type) and if the processor understands the FOAF vocabulary it can determine which properties specify the person’s name and homepage.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「JSON-LD」の詳細全文を読む



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