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  • 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
  • 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
  • rdfa - RDFa Vocabulary for Term and Prefix Assignment, and for Processor Graph Reporting
    http://www.w3.org/ns/rdfa#
    This document describes the RDFa Vocabulary for Term and Prefix Assignment. The Vocabulary is used to modify RDFa 1.1 processing behavior @en
  • rdft - The RDF 1.1 Test Vocabulary
    http://www.w3.org/ns/rdftest
    This is a vocabulary document and is used to define classes and properties used in RDF 1.1 Test Cases and associated test manifests. The URI of the vocabulary is http://www.w3.org/ns/rdftest# (abbreviated by rdft: in this document). Turtle and an JSON-LD versions of the vocabulary are also available. The vocabulary is published by W3C. @en
  • ssn - Semantic Sensor Network Ontology
    http://www.w3.org/ns/ssn/
    This ontology describes sensors, actuators and observations, and related concepts. It does not describe domain concepts, time, locations, etc. these are intended to be included from other ontologies via OWL imports. @en
  • uiot - Urban IoT Ontologies - Core Module
    http://www.w3id.org/urban-iot/core
    Core module of the suite of ontologies for urban IoT devices. @en
  • uiote - Urban IoT Ontologies - Electric Mobility Module
    http://www.w3id.org/urban-iot/electric
    Electric Mobility module of the suite of ontologies for urban IoT devices. @en
  • d2rq - D2RQ - Language Specification
    http://www.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/0.1
    This document specifies the D2RQ mapping language. D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies. @en
  • wl - WSMO-Lite Ontology
    http://www.wsmo.org/ns/wsmo-lite#
    WSMO-Lite is a lightweight approach to the semantic annotation of Web service descriptions, defined by the STI2 working group Conceptual Models for Services @en
  • sosa - Sensor, Observation, Sample, and Actuator (SOSA) Ontology
    http://www.w3.org/ns/sosa/
    This ontology is based on the SSN Ontology by the W3C Semantic Sensor Networks Incubator Group (SSN-XG), together with considerations from the W3C/OGC Spatial Data on the Web Working Group. @en
  • caso - Context Aware System Observation Ontology
    http://www.w3id.org/def/caso#
    CASO (Context Aware System Observation) is an ontology for context aware system and observation services. Its goal is to describe all the processing of the context. @en
  • rr - RDB to RDF Mapping Language Schema
    http://www.w3.org/ns/r2rml#
    A vocabulary which can be used to specify a mapping of relational data to RDF. @en
  • atts - Air Traffic Temporal and Spacial Vocabulary
    https://data.nasa.gov/ontologies/atmonto/general#
    Defines temporal / spatial concepts and general-purpose datastructures @en
  • tresiot - Ontology for Trust Recommendation in Social Internet of Things
    https://liidr.org/trust-recommendation-in-social-internet-of-things/
    This ontology models trust recommendation concepts in SIoT to bridge the gap between abstract trust concepts and real-world device concepts. @en