Overview - ISO 19150-4:2019 (Service ontology)
ISO 19150-4:2019 defines a framework for representing geographic information Web services as ontologies using the Web Ontology Language (OWL). The standard specifies how to describe GeoWeb service components, behaviour and metadata so services can be published, discovered, composed and invoked on the Semantic Web. It leverages existing ISO service metadata and definitions (notably ISO 19115-1 and ISO 19119) and formalizes the Meta:Service foundation of the ISO geographic information reference model. ISO 19150-4 does not prescribe semantic operators, ontology rule languages, or application-specific ontologies - it provides the OWL modelling framework and requirements for GeoWeb service descriptions.
Key topics and technical requirements
- OWL-based service ontology: A formal ontology structure to model geographic Web services in OWL for machine-readable semantics.
- Service identification & description: Model elements for uniquely identifying and describing GeoWeb services on the Web.
- Taxonomy and function: Classification of GeoWeb services and formalization of their functional capabilities.
- Service lifecycle and parameters: Representation of lifecycle states, inputs/outputs, and configurable service parameters.
- Service capabilities: Modelling of capability attributes including accuracy, performance and security characteristics.
- Service metadata alignment: Reuse and mapping to ISO 19115-1 metadata and ISO 19119 service definitions to ensure interoperability with existing standards.
- Conformance & testing: Requirements for conformance and an abstract test suite (normative) for validating OWL service descriptions.
- Informative annexes: Use cases and OWL resources to guide implementation.
Practical applications - who uses ISO 19150-4
ISO 19150-4 is intended for organizations and professionals involved in spatial data infrastructures (SDI), GeoWeb service development, and Semantic Web integration, including:
- GIS software vendors and API designers who publish GeoWeb services.
- SDI architects and catalog/registry implementers responsible for service discovery and metadata harvesting.
- Ontology engineers and semantic developers building OWL service descriptions and reasoning workflows.
- Data providers and integrators seeking automated service composition, discovery, and invocation across heterogeneous systems.
Benefits include improved semantic interoperability, automated service discovery/composition, richer metadata for catalogues, and better alignment of ISO/TC 211 standards with Semantic Web technologies.
Related standards
Keywords: ISO 19150-4, service ontology, geographic information, OWL, GeoWeb services, Semantic Web, ISO 19115-1, ISO 19119, SDI, service metadata.
