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27:27 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Leveraging Big Geo Data through Metadata

The increase in the scale of traditional data sources, along with an explosion in the availability of sensor data, have originated massive volumes of data, a great deal of which is actually geolocated. This is partly due to the wide adoption of cheaper position technologies, and to the exponential growing of Volunteered Geographic Geographic Information (VGI) movements, which rely on crowdsourcing approaches. Big Data has generated a lot of interest amongst industry, the developer community and the public in general, and it has been at the core of many technology innovations which took place recently (e.g.: NoSQL, MapReduce); these new approaches already started to involve the geo community with projects such as the ESRI Spatial Framework for Hadoop or GeoTrellis, just to mention a few. However, the focus has been mostly on storing data (at the infrastructure level) and using data (at the analysis level), leaving aside challenges such as discoverability, integration or security. In this talk, we will address some of these outstanding challenges through the use of metadata and the semantic web, and show how the use of a decentralized and standardized catalog can help to unlock the five V's of Big Data: Volume, Velocity, Variety, Veracity, and most importantly, Value.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
19:08 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

GeoDataStore; governmental open data cloud storage and easy metadata creation

At the beginning of 2016 the Dutch SDI organisation ‘PDOK’ has released a cloud service to facilitate spatial open data publishing. PDOK is a cooperation of several public bodies: Kadaster, Rijkswaterstaat, Ministry of Infrastructure and Environment, Ministry of Economic Affairs, the four big cities Amsterdam, The Hague, Rotterdam and Utrecht, the Open Data project, the collaborating provinces unified in IPO and Geonovum. Each governmental organisation in the Netherlands can use the service to publish spatial open data sets. The goal of the project is to make data publishing as easy as possible, while being in accordance with the applicable open data standards (iso19139). The developments are based on GeoNetwork opensource and made available on Github. Metadata is automatically extracted from any uploaded dataset or taken with default values, so an user has to supply up to only 10 properties of the metadata in an easy to use form. In the presentation we’ll demonstrate the application, we introduce you to the policy aspects that led to these developments, explain the choice for Open Source Software and future steps of the project.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
20:39 FOSS4G, Open Source Geospatial Foundation (OSGeo) English 2016

Integrating the spatial web with linked open data using GeoDCAT-AP

GeoDCAT-AP is an extension of DCAT-AP for describing geospatial datasets, dataset series, and services. It provides an RDF syntax binding for the union of metadata elements defined in the core profile of ISO 19115:2003 and those defined in the framework of the INSPIRE Directive. Its basic use case is to make spatial datasets, data series, and services searchable on general data portals, thereby making geospatial information better searchable across borders and sectors. This can be achieved by the exchange of descriptions of datasets among data portals.
  • Published: 2016
  • Publisher: FOSS4G, Open Source Geospatial Foundation (OSGeo)
  • Language: English
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