An ontology-based approach to incorporate user-generated geo-content into SDI

Dong Po Deng, Rob Lemmens

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The Web is changing the way people share and communicate information because of emergence of various Web technologies, which enable people to contribute information on the Web. User-Generated Geo-Content (UGGC) is a potential resource of geographic information. Due to the different production methods, UGGC often cannot fit in geographic information model. There is a semantic gap between UGGC and formal geographic information. To integrate UGGC into geographic information, this study conducts an ontology-based process to bridge this semantic gap. This ontology-based process includes five steps: Collection, Extraction, Formalization, Mapping, and Deployment. In addition, this study implements this process on Twitter messages, which is relevant to Japan Earthquake disaster. By using this process, we extract disaster relief information from Twitter messages, and develop a knowledge base for GeoSPARQL queries in disaster relief information.

Original languageEnglish
Pages (from-to)38-43
Number of pages6
JournalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Issue number4W25
Publication statusPublished - 30 Aug 2011
EventISPRS Guilin 2011 Workshop on Geospatial Data Infrastructure: From Data Acquisition and Updating to Smarter Services - Guilin, China
Duration: 20 Oct 201121 Oct 2011


  • Data mining
  • Query
  • Spatial information sciences
  • Technology
  • Understanding
  • Web based


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