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  • xsd - XML Schema
    http://www.w3.org/2001/XMLSchema
    The XML Schema representation @en
  • log - SWAP Logic Ontology
    http://www.w3.org/2000/10/swap/log
    An historical ontology used by the cwm command-line tool back in the very early days of the semantic web (~ 2000- 2003 ?) @en
  • exif - Exif data description vocabulary
    http://www.w3.org/2003/12/exif/ns
    Vocabulary to describe an Exif format picture data. All Exif 2.2 tags are defined as RDF properties, as well as several terms to help this schema. @en
  • skos - Simple Knowledge Organization System
    http://www.w3.org/2004/02/skos/core
    The Simple Knowledge Organization System (SKOS) is a common data model for sharing and linking knowledge organization systems via the Semantic Web. @en
  • rdfg - Graph
    http://www.w3.org/2004/03/trix/rdfg-1/
    Properties allowing statement of intensional equivalence between RDF graphs @en
  • fresnel - Fresnel Lens and Format Core Vocabulary
    http://www.w3.org/2004/09/fresnel
    OWL Full vocabulary for defining lenses and formats on RDF models. @en
  • prof - Profiles Vocabulary
    http://www.w3.org/ns/dx/prof
    This vocabulary is for describing relationships between standards/specifications, profiles of them and supporting artifacts such as validating resources. This model starts with [http://dublincore.org/2012/06/14/dcterms#Standard](dct:Standard) entities which can either be Base Specifications (a standard not profiling any other Standard) or Profiles (Standards which do profile others). Base Specifications or Profiles can have Resource Descriptors associated with them that defines implementing rules for the it. Resource Descriptors must indicate the role they play (to guide, to validate etc.) and the formalism they adhere to (dct:format) to allow for content negotiation. A vocabulary of Resource Roles are provided alongside this vocabulary but that list is extensible. @en
  • ldp - Linked Data Platform
    http://www.w3.org/ns/ldp#
    A set of best practices and simple approach for a read-write Linked Data architecture, based on HTTP access to web resources that describe their state using the RDF data model. @en
  • lexdcp - Lexicon Model for Ontologies - Decomp
    http://www.w3.org/ns/lemon/decomp
    A model for the representation of lexical information relative to ontologies. Decomposition module. @en
  • cnt - Representing Content in RDF
    http://www.w3.org/2011/content
    Representing Content in RDF as defined by http://www.w3.org/TR/Content-in-RDF/ @en
  • wdrs - Protocol for Web Description Resources
    http://www.w3.org/2007/05/powder-s
    The Protocol for Web Description Resources (POWDER) allows metadata to be associated with groups of resources such as those found on a Web site. @en
  • oa - Open Annotation Data Model
    http://www.w3.org/ns/oa#
    The Open Annotation Core Data Model specifies an interoperable framework for creating associations between related resources, annotations, using a methodology that conforms to the Architecture of the World Wide Web. This ontology is a non-normative OWL formalization of the textual OA specification at http://www.openannotation.org/spec/core/20130208/index.html @en
  • odrl - The Open Digital Rights Language (ODRL) Ontology
    http://www.w3.org/ns/odrl/2/
    The Open Digital Rights Language (ODRL) provides flexible and interoperable mechanisms to support transparent and innovative use of digital content in publishing, distribution, and consumption of of digital media across all sectors and communities. The ODRL Policy model is broad enough to support traditional rights expressions for commercial transaction, open access expressions for publicly distributed content, and privacy expressions for social media. @en
  • atm - Air Traffic Management (ATM) Vocabulary
    https://data.nasa.gov/ontologies/atmonto/ATM#
    Defines specific air traffic management concepts used in aircraft navigation through the US National Airspace System @en
  • istex - Istex ontology for scholarly documents and extracted entities
    https://data.istex.fr/ontology/istex#
    ISTEX is a platform that aims to provide the entire French higher education and research community with an online access to retrospective collections of scientific literature in all disciplines. This unparalleled reservoir of multidisciplinary resources is complemented by a significant number of value-added services that can be used to optimise operations through content discovery and interactive valuation tools. @en