Standard

This document describes Basic Formal Ontology (BFO), which is an ontology that is conformant to the requirements specified for top-level ontologies inISO/IEC218381. It describes BFO as a resource designed to support the interchange of information among heterogeneous information systems. The following are within the scope of this document: definitions of BFO-2020 terms and relations; axiomatizations of BFO-2020 in OWL2 and CL; documentation of the conformity of BFO-2020 to the requirements specified for top-level ontologies inISO/IEC218381; specification of the requirements for a domain ontology if it is to serve as a module in a suite of ontologies in which BFO serves as top-level ontology hub by providing a starting point for the introduction of the most general terms in those domain ontologies which are its nearest neighbours within the suite; specification of the role played by the terms in BFO in the formulation of definitions and axioms in ontologies at lower levels that conform to BFO. The following are outside the scope of this document: specification of ontology languages, including the languages RDF, OWL, and CL standardly used in ontology development; specification of methods for reasoning with ontologies; specification of translators between the notations of ontologies developed in different ontology languages.

iiRDS is a standard for the delivery of intelligent information in the scope of user assistance for products. The information is provided with the product for the purpose of assisting the users in setting up, operating, and maintaining the product. Intelligent information is defined as technical documentation content enriched with metadata. iiRDS consists of a vocabulary for the metadata provided with the content (RDF Schema) and a package format for the exchange of packages.

The SAREF extension for the water domain (SAREF4WATR) is based on a limited set of use cases and from available existing data models.

The Smart Applications REFerence ontology (SAREF) is intended to enable interoperability between solutions from different providers and among various activity sectors in the Internet of Things (IoT), thus contributing to the development of the global digital market.

The Thing Description (TD) ontology is an RDF axiomatization of the TD information model, one of the building blocks of the Web of Things (WoT). Besides providing an alternative to the standard JSON representation format for TD documents, the TD ontology can also be used to process contextual information on Things and for alignments with other WoT-related ontologies.

This document provides the basic concepts for IoT systems semantic interoperability, as described in the facet model of ISO/IEC 21823-1, including: - requirements of the core ontologies for semantic interoperability; - best practices and guidance on how to use ontologies and to develop domain-specific applications, including the need to allow for extensibility and connection to external ontologies; - cross-domain specification and formalization of ontologies to provide harmonized utilization of existing ontologies; - relevant IoT ontologies along with comparative study of the characteristics and approaches in terms of modularity, extensibility, reusability, scalability, interoperability with upper ontologies, and so on, and; - use cases and service scenarios that exhibit necessities and requirements of semantic interoperability.

The Semantic Sensor Network (SSN) ontology is an ontology for describing sensors and their observations, the involved procedures, the studied features of interest, the samples used to do so, and the observed properties, as well as actuators. SSN follows a horizontal and vertical modularization architecture by including a lightweight but self-contained core ontology called SOSA (Sensor, Observation, Sample, and Actuator) for its elementary classes and properties. With their different scope and different degrees of axiomatization, SSN and SOSA are able to support a wide range of applications and use cases, including satellite imagery, large-scale scientific monitoring, industrial and household infrastructures, social sensing, citizen science, observation-driven ontology engineering, and the Web of Things. Both ontologies are described below, and examples of their usage are given.

SAREF4SYST defines Systems, Connections between systems, and Connection Points at which systems may be connected.

SEAS ontology describes energy systems and their interactions.

SAREF4INMA focuses on extending SAREF for the industry and manufacturing domain to solve the lack of interoperability between various types of production equipment that produce items in a factory and, once outside the factory, between different organizations in the value chain to uniquely track back the produced items to the corresponding production equipment, batches, material and precise time in which they were manufactured.

SAREF4CITY is an extension of SAREF for the Smart Cities domain. This extension has been created by investigating resources from potential stakeholders of the ontology, such as standardization bodies, associations, IoT platforms and European projects and initiatives. Taking into account ontologies, data models, standards and datasets provided by the identified stakeholders, a set of requirements were identified and grouped in the following categories: Topology, Administrative Area, City Object, Event, Measurement, Key Performance Indicator, and Public Service.

Industrial automation systems and integration