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  • oecc - Extended Creative Commons Ontology
    http://www.oegov.org/core/owl/cc
    Creative Commons Ontology, extending RDF file at http://creativecommons.org/schema.rdf @en
  • of - Open Fridge vocabulary
    http://owlrep.eu01.aws.af.cm/fridge
    Ontology for Open Fridge project @en
  • ofo - Occupant Feedback Ontology
    https://w3id.org/ofo#
    The aim of the Occupant Feedback Ontology is to semantically describe passive and active occupant feedback and to enable integration of this feedback with linked building data. @en
  • ofrd - Fridge and Freezer Vocabulary
    http://purl.org/opdm/refrigerator#
    Vocabulary to describe fridges and freezers @en
  • og - Open Graph Protocol Vocabulary
    http://ogp.me/ns
    The Open Graph protocol enables any web page to become a rich object in a social graph. For instance, this is used on Facebook to enable any web page to have the same functionality as a Facebook Page. @en
  • oh - The Opening Hours vocabulary
    http://semweb.mmlab.be/ns/oh
    A vocabulary to describe opening hours using calendars (recommended: iCal, RDFCal or schema.org) published on the Web. @en
  • okh - Open Know How (OKH) ontology
    https://w3id.org/oseg/ont/okh
    Used for indexing, searching and comparing Open Source Hardware projects @en
  • olca - Ontology Loose Coupling Annotation
    https://w3id.org/vocab/olca
    A vocabulary defining annotations enabling loose coupling between classes and properties in ontologies. Those annotations define with some accuracy the expected use of properties, in particular across vocabularies, without the formal constraints entailed by the use of OWL or RDFS constructions @en
  • olo - Ordered List Ontology
    http://purl.org/ontology/olo/core#
    The Ordered List Ontology Specification provides basic concepts and properties for describing ordered lists as semantic graphs. @en
  • om - ISO 19156 Observation Model
    http://def.seegrid.csiro.au/isotc211/iso19156/2011/observation
    An OWL representation of the Observation Schema described in clause 6 of ISO 19156:2011 Geographic Information - Observations and Measurements @en
  • omg - OMG: Ontology for Managing Geometry
    https://w3id.org/omg
    The Ontology for Managing Geometry (OMG) is an ontology for describing geometry descriptions of objects. It provides means to support the application of multiple geometry descriptions of the same object as well as the description of the geometry evolution over time. The OMG is based the concepts introduced in the Ontology for Property Management (OPM) ontology. This ontology was created within the research project SCOPE, funded by the German Federal Ministry for Economic Affairs and Energy (BMWi). The initial version of the ontology (v0.0.1) is documented in: Wagner, Anna, Bonduel, Mathias, Pauwels, Pieter & Rüppel, Uwe(2019). Relating Geometry Descroptions to its Derivatives on the Web. In Proceedings of the European Conference on Computing in Construction (EC3 2019). Chania, Greece. @en
  • oml - OWL for Observations
    http://def.seegrid.csiro.au/ontology/om/om-lite
    An OWL representation of the Observation Schema described in clauses 7-8 of ISO 19156:2011 Geographic Information - Observations and Measurements / OGC Abstract Specification - Topic 20. @en
  • omn - Open-Multinet Upper Ontology
    http://open-multinet.info/ontology/omn
    This ontology defines the most abstract concepts and properties that are needed to semantically manage resource within federated infrastructures @en
  • omnfed - Open-Multinet Upper Federation Ontology
    http://open-multinet.info/ontology/omn-federation
    This ontology defines concepts related to federation of internet infrastructures. @en
  • omnlc - Open-Multinet Upper Lifecycle Ontology
    http://open-multinet.info/ontology/omn-lifecycle
    This ontology defines generic concepts related to the life cycle of resource or service. @en