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  • xsd - XML Schema
    http://www.w3.org/2001/XMLSchema
    The XML Schema representation @en
  • rdfs - The RDF Schema vocabulary
    http://www.w3.org/2000/01/rdf-schema#
    RDF Schema provides a data-modelling vocabulary for RDF data. RDF Schema is an extension of the basic RDF vocabulary. @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
  • rdf - The RDF Concepts Vocabulary
    http://www.w3.org/1999/02/22-rdf-syntax-ns#
    This is the RDF Schema for the RDF vocabulary terms in the RDF Namespace, defined in RDF 1.1 Concepts. @en
  • owl - The OWL 2 Schema vocabulary
    http://www.w3.org/2002/07/owl
    This ontology partially describes the built-in classes and properties that together form the basis of the RDF/XML syntax of OWL 2. @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
  • swp - Graph Authority
    http://www.w3.org/2004/03/trix/swp-1
    This vocabulary allows to attach an authority to a named graph @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
  • vs - SemWeb Vocab Status ontology
    http://www.w3.org/2003/06/sw-vocab-status/ns
    An RDF vocabulary for relating SW vocabulary terms to their status. @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
  • hydra - The Hydra Core Vocabulary
    http://www.w3.org/ns/hydra/core
    A lightweight vocabulary for hypermedia-driven Web APIs @en
  • adms - Asset Description Metadata Schema
    http://www.w3.org/ns/adms
    ADMS is a profile of DCAT, used to describe semantic assets (or just 'Assets'), defined as highly reusable metadata (e.g. xml schemata, generic data models) and reference data (e.g. code lists, taxonomies, dictionaries, vocabularies) that are used for eGovernment system development. @en
  • skosxl - SKOS eXtension for Labels
    http://www.w3.org/2008/05/skos-xl
    SKOS-XL defines an extension for the Simple Knowledge Organization System, providing additional support for describing and linking lexical entities. @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