Neumaier, Sebastian, Polleres, Axel. 2019. Enabling Spatio-Temporal Search in Open Data. Journal of Web Semantics. 55 21-36.
BibTeX
Abstract
Intuitively, most datasets found on governmental Open Data portals are organized by spatio-temporal criteria, that is, single datasets provide data for a certain region, valid for a certain time period. Likewise, for many use cases (such as, for instance, data journalism and fact checking) a pre-dominant need is to scope down the relevant datasets to a particular period or region. Rich spatio-temporal annotations are therefore a crucial need to enable semantic search for (and across) Open Data portals along those dimensions, yet – to the best of our knowledge – no working solution exists. To this end, we (i) present a scalable approach to construct a spatio-temporal knowledge graph that hierarchically structures geographical as well as temporal entities, (ii) annotate a large corpus of tabular datasets from open data portals with entities from this knowledge graph, and (iii) enable structured, spatio-temporal search and querying over Open Data catalogs, both via a search interface as well as via a SPARQL endpoint, available at data.wu.ac.at/odgraphsearch/.
Tags
Press 'enter' for creating the tag- Open data
- Spatio-temporal labelling
- knowledge graph
Publication's profile
Status of publication | Published |
---|---|
Affiliation | WU |
Type of publication | Journal article |
Journal | Journal of Web Semantics |
Citation Index | SCI |
WU-Journal-Rating new | INF-A |
Language | English |
Title | Enabling Spatio-Temporal Search in Open Data |
Volume | 55 |
Year | 2019 |
Page from | 21 |
Page to | 36 |
Reviewed? | Y |
URL | http://www.sciencedirect.com/science/article/pii/S1570826818300696 |
DOI | https://doi.org/10.1016/j.websem.2018.12.007 |
Open Access | N |
Associations
- People
- Neumaier, Sebastian (Details)
- Polleres, Axel (Details)
- Organization
- Institute for Data, Process and Knowledge Management (AE Polleres) (Details)
- Research areas (ÖSTAT Classification 'Statistik Austria')
- 1108 Informatics (Details)
- 1109 Information and data processing (Details)
- 1138 Information systems (Details)
- 1146 Management information systems (Details)