Exposing INSPIRE on the Semantic Web

Patroumpas, Kostas; Georgomanolis, N.; Stratiotis, T.; Alexakis, Michalis; Athanasiou, Spiros

doi:10.1016/j.websem.2015.09.003

Cited by 26 publications

(18 citation statements)

References 3 publications

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“…Enabling information models and geospatial information based on ISO/TC 211 and OGC standards in RDF and OWL can bring more value to the domain of GIS and other domains as well as the Semantic Web in general [23]. Semantic Web technologies can be used to improve discovery in SDIs [24][25][26][27][28][29]. Authoritative geospatial information can be combined with less structured geospatial information from crowdsourcing, citizen science and sensors [20,30], and Semantic Web concepts for reasoning may be used to derive new knowledge [31][32][33].…”

Section: Geospatial Information In the Semantic Webmentioning

confidence: 99%

Adapted Rules for UML Modelling of Geospatial Information for Model-Driven Implementation as OWL Ontologies

Jetlund

Onstein

Huang

2019

IJGI

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This study aims to improve the implementation of models of geospatial information in Web Ontology Language (OWL). Large amounts of geospatial information are maintained in Geographic Information Systems (GIS) based on models according to the Unified Modeling Language (UML) and standards from ISO/TC 211 and the Open Geospatial Consortium (OGC). Sharing models and geospatial information in the Semantic Web will increase the usability and value of models and information, as well as enable linking with spatial and non-spatial information from other domains. Methods for conversion from UML to OWL for basic concepts used in models of geospatial information have been studied and evaluated. Primary conversion challenges have been identified with specific attention to whether adapted rules for UML modelling could contribute to improved conversions. Results indicated that restrictions related to abstract classes, unions, compositions and code lists in UML are challenging in the Open World Assumption (OWA) on which OWL is based. Two conversion challenges are addressed by adding more semantics to UML models: global properties and reuse of external concepts. The proposed solution is formalized in a UML profile supported by rules and recommendations and demonstrated with a UML model based on the Intelligent Transport Systems (ITS) standard ISO 14825 Geographic Data Files (GDF). The scope of the resulting ontology will determine to what degree the restrictions shall be maintained in OWL, and different conversion methods are needed for different scopes.

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Section: Geospatial Information In the Semantic Webmentioning

confidence: 99%

Adapted Rules for UML Modelling of Geospatial Information for Model-Driven Implementation as OWL Ontologies

Jetlund

Onstein

Huang

2019

IJGI

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“…Metadata should ensure the understanding of data as well as interoperability with different systems. Therefore, file formats that support machine-reading (e.g., XML) are in focus [21]. The geo-information services norm deals with the definition of standardized interfaces and software architectures to provide platform and software independent services.…”

Section: Public Sector Initiative and Inspire: The European Frameworkmentioning

confidence: 99%

Theoretical Availability versus Practical Accessibility: The Critical Role of Metadata Management in Open Data Portals

Schauppenlehner

Muhar

2018

Sustainability

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As a consequence of policies such as the EU Public Sector Initiative, authorities across Europe have been moving towards providing free access to a wide range of statistical data and in particular geodata. From the diverse end-users' perspective (general public, interest groups, students, other authorities, etc.), access to data requires specific knowledge, methods, and guidance in identifying and using the relevant content. Metadata are a key concept for the description and classification of data and thus also for ensuring their long-term value. We analyze the European Data Portal as well as one national metadatabase (Austrian Data Portal) with regard to aspects such as data search functionality, keyword consistency, spatial referencing, data format and data license information. In both cases, we found extensive inconsistencies and conceptual weaknesses that heavily limit the practical accessibility. The mere presence of metadata is no indicator for the usability of the data. We argue for a better definition and structuring of the interface between the numerous data providers and the metadatabases.

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“…In fact, the aforementioned heterogeneity issues, together with the scarcity and inaccuracy of metadata, hamper the effective search for the intended resources over the web. Data schema mapping via XSLT [24], also supported by INSPIRE Data Specifications (https://inspire.ec.europa.eu/data-specifications/2892), already features virtuous examples, such as in Patroumpas et al [25]. This practice may easily overcome syntactic and schematic mismatches between distinct data and metadata representations (http://icaci.org/files/ documents/ICC_proceedings/ICC2013/_extendedAbstract/1383_abstract.pdf).…”

Section: Semantic Characterization Of Geospatial Metadatamentioning

confidence: 99%

Web-Scale Normalization of Geospatial Metadata Based on Semantics-Aware Data Sources

Fugazza

Tagliolato

Frigerio

et al. 2017

IJGI

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Geospatial metadata are largely denormalized inasmuch as resource descriptions typically accommodate property values as plain text. Hence, it is not possible to bring multiple references to the same entity (say, a keyword from a controlled vocabulary) under the same umbrella. This practice is ultimately the main source for the heterogeneities in metadata descriptions by which geospatial discovery is hampered. In this paper, we elaborate on ex-post semantic augmentation of metadata, a technique generally referred to as semantic lift, which complements our previous research on semantic characterization of metadata via transparent association of uniform resource identifiers with metadata items at editing time. The latter is accomplished by means of a template-based metadata editor that can be tailored to any XML-based metadata schema. By repurposing the template language previously defined for metadata editing, we broaden the expressiveness of the former and integrate heterogeneous, XML-based resource descriptions in our semantics-aware metadata management workflow. URI-based indirection in metadata provision not only entails normalization of individual information items and allows one to overcome the aforementioned heterogeneities, but also elicits decentralized, multi-tenanted management of metadata.

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Exposing INSPIRE on the Semantic Web

Cited by 26 publications

References 3 publications

Adapted Rules for UML Modelling of Geospatial Information for Model-Driven Implementation as OWL Ontologies

Adapted Rules for UML Modelling of Geospatial Information for Model-Driven Implementation as OWL Ontologies

Theoretical Availability versus Practical Accessibility: The Critical Role of Metadata Management in Open Data Portals

Web-Scale Normalization of Geospatial Metadata Based on Semantics-Aware Data Sources

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