Linked Data provides an alternative route for the dissemination of spatial information compared to the traditional Service-Oriented Architecture (SOA)-based Spatial Data Infrastructure (SDI) approach. The traditional approach has provided a wealth of standardized and structured location data based on Geography Markup Language (GML), while Linked Data provides an open mechanism for sharing and combining this data with anything, once the data is available as Linked Data. The first part of the paper focuses on deriving Linked Data from GML data. In the second part, it examines how more meaningfully expressed RDF data can be created from GML by transforming it from Unified Modeling Language (UML) to OWL.
Keywords: eXtensible Stylesheet Language Transformations (XSLT), Web Ontology Language (OWL), HTTP URIs, XML Schema
Author: van den Brink, Linda
Publisher: International Journal of Spatial Data Infrastructures Research
Date created: 2014-01-01 05:00:00.000
Time required: P30M
Educational use: professionalDevelopment
Educational audience: teacher-educationSpecialist
Interactivity type: expositive
- Chooses "hash"- or "slash"-based URI patterns based on requirements.
- Drafts a policy for coining URIs for properties and classes.
- Differentiates hierarchical document models (eg, XML) and graph models (RDF).
- Generates RDF data from non-RDF sources.
- Understands that owl:equivalentProperty and owl:equivalentClass may be used when equivalencies between properties or between classes are exact.