Editing Semantic Web (section)

{{Short description|Extension of the Web to facilitate data exchange}}
{{About|the concept based around machine-readability for the World Wide Web|the concept of a World Wide Web based on public blockchains also called Web 3.0|Web3}}
{{Use American English|date=December 2021}}
[[File:Rdf-graph2.png|thumb|upright=1.35|A [[tag cloud]] (a typical Web 3.0 phenomenon in itself) presenting Web 3.0 themes]]
{{Semantics}}

The '''Semantic Web''', sometimes known as '''Web 3.0''', is an extension of the [[World Wide Web]] through standards<ref>Semantic Web at W3C: https://www.w3.org/standards/semanticweb/</ref> set by the [[World Wide Web Consortium]] (W3C).<!--ref>{{cite web|url=http://www.dblab.ntua.gr/~bikakis/XML%20and%20Semantic%20Web%20W3C%20Standards%20Timeline-History.pdf|title=XML and Semantic Web W3C Standards Timeline|date=2012-02-04}}</ref--> The goal of the Semantic Web is to make [[Internet]] data [[machine-readable]].

To enable the encoding of [[semantics]] with the data, technologies such as [[Resource Description Framework]] (RDF)<ref>{{cite web|url=http://www.w3.org/TR/rdf-syntax-grammar/ | title=World Wide Web Consortium (W3C), "RDF/XML Syntax Specification (Revised)", 25 Feb. 2014.}}</ref> and [[Web Ontology Language]] (OWL)<ref>{{cite web|url=http://www.w3.org/TR/owl-features/ | title=World Wide Web Consortium (W3C), "OWL Web Ontology Language Overview", W3C Recommendation, 10 Feb. 2004.}}</ref> are used. These technologies are used to formally represent [[metadata]]. For example, [[Ontology (information science)|ontology]] can describe [[concept]]s, relationships between [[Entity–relationship model|entities]], and categories of things. These embedded semantics offer significant advantages such as [[reasoning engine|reasoning]] over data and operating with heterogeneous data sources.<ref>{{cite journal|url=https://purkh.com/index.php/tocomp/article/view/33|last=Chung|first=Seung-Hwa|title=The MOUSE approach: Mapping Ontologies using UML for System Engineers|date=2018|journal=Computer Reviews Journal|issn=2581-6640|pages=8–29}}</ref>
These standards promote common data formats and exchange protocols on the Web, fundamentally the RDF. According to the W3C, "The Semantic Web provides a common framework that allows data to be shared and reused across application, enterprise, and community boundaries."<ref name="W3C-SWA" /> The Semantic Web is therefore regarded as an integrator across different content and information applications and systems.