Abstract
Abstract. The application of the linked data principles provide a simple and effective way to publish and share data on the Web. The publication of geodata on the Web bas been studied and developed for a long time, leading to the creation of geo vocabularies and ontologies as well as geographic query languages. This is also true for 3D geodata, for which multiple RDF vocabularies and OWL ontologies exist (at the building, city, or territory level). In this paper we show that at least two issues remain to be addressed to reach a satisfactory publication framework for 3D linked geodata. First, the semantic model interconnection issue is not magically solved by the creation of ontologies, it requires the careful design of interconnection and extension schemes and their management. Second, the representation of additional dimensions, such as time, level of detail, confidence level, provenance, etc. cannot be directly handled in RDF. For these two issues we propose methodologies and design patterns and show how they can actually be used to create a semantically rich representation of 3D or nD linked geodata.
Highlights
Linked data is a set of principles defined to identify and publish data on the web
The rest of this article is organized as follows: (2) we briefly present the linked data principles and their application to geodata; Section 3 presents 3D linked geodata and the issues that must still be addressed; Section 4 discusses the model interconnection and extension issue and proposes an approach for the management of 3D model extensions; Section 5 discusses the introduction of other dimensions; Section 6 provides conclusions and perspectives, 2
Since the linked data approach relies on OWL ontologies or RDF Schemas (RDFS), we first listed the main 3D geodata already expressed as OWL ontologies or RDFS
Summary
Linked data is a set of principles defined to identify and publish data on the web. In this paper we study the application of the linked data approach to 3D geographic data (geodata) with the aim to propose solutions to issues that are still hindering the publication of 3D geodata as linked data. The rest of this article is organized as follows: (2) we briefly present the linked data principles and their application to geodata; Section 3 presents 3D linked geodata and the issues that must still be addressed; Section 4 discusses the model interconnection and extension issue and proposes an approach for the management of 3D model extensions; Section 5 discusses the introduction of other dimensions (times, level of detail, provenance, ...); Section 6 provides conclusions and perspectives, 2.
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