Abstract
The effective access and use of geospatial information (GI) resources acquires a critical value of importance in modern knowledge based society. Standard web services defined by Open Geospatial Consortium (OGC) are frequently used within the implementations of spatial data infrastructures (SDIs) to facilitate discovery and use of geospatial data. This data is stored in databases located in a layer, called the invisible web, thus are ignored by search engines. SDI uses a catalogue (discovery) service for the web as a gateway to the GI world through the metadata defined by ISO standards, which are structurally diverse to OGC metadata. Therefore, a crosswalk needs to be implemented to bridge the OGC resources discovered on mainstream web with those documented by metadata in an SDI to enrich its information extent. A public global wide and user friendly portal of OGC resources available on the web ensures and enhances the use of GI within a multidisciplinary context and bridges the geospatial web from the end-user perspective, thus opens its borders to everybody. <br><br> Project “Crosswalking the layers of geospatial information resources to enable a borderless geospatial web” with the acronym BOLEGWEB is ongoing as a postdoctoral research project at the Faculty of Geodesy, University of Zagreb in Croatia (http://bolegweb.geof.unizg.hr/). The research leading to the results of the project has received funding from the European Union Seventh Framework Programme (FP7 2007-2013) under Marie Curie FP7-PEOPLE-2011-COFUND. The project started in the November 2014 and is planned to be finished by the end of 2016. This paper provides an overview of the project, research questions and methodology, so far achieved results and future steps.
Highlights
1.1 Background Rapid development of Spatial Data Infrastructures (SDIs) around the world triggered by INSPIRE (INSPIRE, 2007) and other similar initiatives make more and more geospatial information (GI) resources available on the web
The main objective of the project is to design, develop and implement a complex solution for the discovery of GI resources from available web services defined by Open Geospatial Consortium (OGC) standards on the Internet; provide geospatial metadata according to standards of current communities that potentially might be seeking for geospatial resources (SDI, Semantic and Open Data communities)
The number of URLs collected within the whole period aggregated into individual calendar years and OGC service type is represented by Figure 4
Summary
1.1 Background Rapid development of Spatial Data Infrastructures (SDIs) around the world triggered by INSPIRE (INSPIRE, 2007) and other similar initiatives make more and more geospatial information (GI) resources (data and services) available on the web. Crucial SDI component which enable users to search and find GI resources are metadata. Metadata are first visible component of each SDI for users. In the frame of SDI, the metadata are usually divided as metadata for geospatial data and metadata for geospatial services. Both are served in the standardised way by using discovery services. Geospatial data users search for GI resources within an SDI using discovery clients of a Geoportal application (i.e. INSPIRE Geoportal1) (Kliment et al, 2013a)
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