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26:14 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Validating services and data in an SDI

To achieve interoperability in a spatial data infrastructure (SDI), conformance to specifications is essential for services and data. Service and data providers need a capability to validate their components. For several OGC standards, the OGC CITE tests provide such a capability. This covers base standards, but in SDIs typically additional specifications are added, for example, service profiles or data specifications. In the European Location Framework (ELF) the test framework ETF is used to validate INSPIRE services and data provided by National Mapping Authorities against the INSPIRE Technical Guidelines as well as against ELF-specific requirements. ETF is a test framework for spatial data infrastructure components. It supports SoapUI (for testing web services) and BaseX (for testing XML documents, including very large ones) as test engines to develop and execute test suites. ETF has been implemented in several iterations over recent years as existing open source test environments could not be configured to provide uniform test reports that were readable by and useful for non-developers. Outside of the ELF project, ETF is currently mainly used in Germany and the Netherlands, partly extending the INSPIRE-specific tests based on national profiles. We present the approach for developing user-friendly test suites and discuss typical issues that have been encountered in the ELF testing.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
23:26 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Spatial data and the Search engines

Why is it so hard to discover spatial data on search engines? In this talk we'll introduce you to an architectural SDI approach based on FOSS4G components, that will enable you to unlock your current SDI to search engines and the www in general. The approach is based on creating a smart proxy layer on top of CSW and WFS which will allow search engines (and search engine users) to crawl CSW and WFS as ordinary web pages. The research and developments to facilitate this approach have been achieved in the scope of the testbed "Spatial data on the web", organised by Geonovum in the first months of 2016. The developments are embedded in existing FOSS4G components (GeoNetwork) or newly released as Opensource software (LDproxy). We'll introduce you to aspects of improving search engine indexing and ranking, setting up a URI-strategy for your SDI, importance of URI persistence, introducing and testing ontology for (meta)data. We’ll explain that this approach can also be used in the context of linked data and programmable data, but it is important not to mix it up. María Arias de Reyna (GeoCat bv) Clemens Portele (interactive instruments) Joana Simoes (GeoCat) Lieke Verhelst (Linked Data Factory) Paul van Genuchten (GeoCat bv)
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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