Quotation Neumaier, Sebastian, Savenkov, Vadim, Polleres, Axel. 2018. Geo-Semantic Labelling of Open Data. In Proceedings of the 14th International Conference on Semantic Systems (SEMANTiCS), Hrsg. Procedia Computer Science, 9-20. Vienna, Austria: Elsevier.


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Abstract

In the past years Open Data has become a trend among governments to increase transparency and public engagement by opening up national, regional, and local datasets. However, while many of these datasets come in semi-structured file formats, they use different schemata and lack geo-references or semantically meaningful links and descriptions of the corresponding geo-entities. We aim to address this by detecting and establishing links to geo-entities in the datasets found in Open Data catalogs and their respective metadata descriptions and link them to a knowledge graph of geo-entities. This knowledge graph does not yet readily exist, though, or at least, not a single one: so, we integrate and interlink several datasets to construct our (extensible) base geo-entities knowledge graph: (i) the openly available geospatial data repository GeoNames, (ii) the map service OpenStreetMap, (iii) country-specific sets of postal codes, and (iv) the European Union’s classification system NUTS. As a second step, this base knowledge graph is used to add semantic labels to the open datasets, i.e., we heuristically disambiguate the geo-entities in CSV columns using the context of the labels and the hierarchical graph structure of our base knowledge graph. Finally, in order to interact with and retrieve the content, we index the datasets and provide a demo user interface. Currently we indexed resources from four Open Data portals, and allow search queries for geo-entities as well as full-text matches at http://data.wu.ac.at/odgraph/.

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Publication's profile

Status of publication Published
Affiliation WU
Type of publication Contribution to conference proceedings
Language English
Title Geo-Semantic Labelling of Open Data
Title of whole publication Proceedings of the 14th International Conference on Semantic Systems (SEMANTiCS)
Editor Procedia Computer Science
Page from 9
Page to 20
Location Vienna, Austria
Publisher Elsevier
Year 2018
URL https://www.sciencedirect.com/science/article/pii/S1877050918316065
Open Access Y
Open Access Link https://www.sciencedirect.com/science/article/pii/S1877050918316065

Associations

Projects
Open Data for Local Communities
People
Neumaier, Sebastian (Details)
Savenkov, Vadim (Details)
Polleres, Axel (Details)
Organization
Applied Information Technology (Details)
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