Resource Description Framework
In plain wordsA web standard for writing facts as simple three-part statements — subject, relation, object — using web addresses as names, so that data from different sources can be merged automatically.
A W3C data model in which every statement is a triple — a subject, a predicate naming a relationship, and an object — with subjects and predicates named by IRIs (web identifiers) and objects given either as IRIs or as literal values, so that any collection of statements forms a directed graph with labeled edges. Global identifiers let independently published datasets refer to the same things, so they can be merged simply by taking the union of their triples. RDF has several serializations (Turtle, RDF/XML, N-Triples, JSON-LD), a vocabulary language, RDF Schema, for declaring classes and properties, and a query language, SPARQL, for graph pattern matching. It is the foundation of the semantic websemantic web, n.: An effort to label data on the web in a standard, precise way so that programs, not only human readers, can tell what it means and connect facts drawn from many different sites. and Linked Data, and is used for open knowledge graphsknowledge graph, n.: A huge web of facts stored as connections between things — 'Paris is the capital of France', 'Marie Curie won a Nobel Prize' — that computers can search, combine and reason over. such as WikidataWikidata, prop. n.: A free, shared collection of facts about millions of things — people, places, books, chemicals — kept by volunteers in the Wikipedia family and laid out so programs can use it as easily as people. and DBpedia, library catalogs and life-science databases.
Export the catalog as RDF and the museum's records can be joined with Wikidata in one SPARQL query.
Origin
Grew from Ramanathan V. Guha's Meta Content Framework (developed at Apple and Netscape, 1995–1997) and W3C metadata work. RDF became a W3C Recommendation in February 1999 and was revised as RDF 1.1 in 2014; SPARQL became a Recommendation in 2008.
Related
- semantic websemantic web, n.: An effort to label data on the web in a standard, precise way so that programs, not only human readers, can tell what it means and connect facts drawn from many different sites.
- Web Ontology LanguageWeb Ontology Language, prop. n.: A web standard language for writing ontologies — precise definitions of categories and their relationships — so that software can check them for contradictions and infer new facts.
- knowledge graphknowledge graph, n.: A huge web of facts stored as connections between things — 'Paris is the capital of France', 'Marie Curie won a Nobel Prize' — that computers can search, combine and reason over.
- ontologyontology, n.: A carefully defined vocabulary for a subject such as medicine, spelling out each kind of thing, how kinds nest inside one another, and which connections between them are allowed.
- WikidataWikidata, prop. n.: A free, shared collection of facts about millions of things — people, places, books, chemicals — kept by volunteers in the Wikipedia family and laid out so programs can use it as easily as people.
Sources
- W3C (2014). RDF 1.1 Concepts and Abstract Syntax. W3C Recommendation, 25 February 2014.
Mentioned in
knowledge graphknowledge graph, n.: A huge web of facts stored as connections between things — 'Paris is the capital of France', 'Marie Curie won a Nobel Prize' — that computers can search, combine and reason over., semantic websemantic web, n.: An effort to label data on the web in a standard, precise way so that programs, not only human readers, can tell what it means and connect facts drawn from many different sites., WikidataWikidata, prop. n.: A free, shared collection of facts about millions of things — people, places, books, chemicals — kept by volunteers in the Wikipedia family and laid out so programs can use it as easily as people., closed-world assumptionclosed-world assumption, n.: The rule of treating whatever a system cannot confirm as false: if a library's catalog does not list a book, the library is assumed not to have it., Web Ontology LanguageWeb Ontology Language, prop. n.: A web standard language for writing ontologies — precise definitions of categories and their relationships — so that software can check them for contradictions and infer new facts.