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Integrating geodata discovery services with OpenSearch
dc.contributor | Huerta Guijarro, Joaquín | |
dc.contributor.author | Fonts Bartolomé, Óscar | |
dc.contributor.other | Universitat Jaume I. Departament de Llenguatges i Sistemes Informàtics | |
dc.date.accessioned | 2014-06-12T18:33:59Z | |
dc.date.available | 2014-06-12T18:33:59Z | |
dc.date.issued | 2010 | |
dc.identifier.uri | http://hdl.handle.net/10234/94703 | |
dc.description | Treball de Fi de Màster en Sistemes Intel.ligents. Curs 2009/2010 | ca_CA |
dc.description.abstract | When publishing information in the web, the aim is to make it reach all the potential interested users, thus content discovery mechanisms are a key web component. Web content discovery is mainly achieved with general purpose search engines, which use text indexation to select content by keywords. In the case of Geographic Information (GI), exposing content to text search engines is not effective. GI needs specific spatial indexing, and use of special- ized format parsers. Google holds a geoindexing engine, where content can be exposed to. But this needs specific data treatment, and indexing process is out of the control of data publishers. In the case of thematic databases, it can be convenient to provide a cus- tom web search service. Some well known examples are on-line dictionar- ies (Wikipedia.org, Wordreference.com), or stores (Amazon.com, Ebay.com). A9.com proposed a widely used specification called OpenSearch, that provides means to describe a search engine, its accepted parameters, response formats and autodiscovery mechanisms. Geographic Information repositories can also benefit from the use of dedicated search services. Several approaches to GI search and discovery mechanisms can be found: The mentioned Google’s Geoindex, the classical OGC standards ap- proach via Catalogue Services for the Web (CSW) and filter description syntax (used for instance in WFS feature selection), or the modern Web 2.0 services approach, consisting of specific web access interfaces (the so-called APIs). This variety of strategies results in a fragmentation of geodata discovery techniques, and increases the user’s needed effort to reach geographic contents. There is a need for a simple, common interface that can be applied to a wide range of geographic information services. OpenSearch is extensible, and its “geo” draft extension can be used in a variety of scenarios to fill this gap, providing a standard, lightweight and flexible discovery mechanism for GI. This works demonstrates how OpenSearch-geo can be applied successfully to a wide range of scenarios. | ca_CA |
dc.format.extent | 42 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/CNE/1.0/ | * |
dc.subject | Geospatial search engines | ca_CA |
dc.subject | OpenSearch | ca_CA |
dc.subject | Geographic web services | ca_CA |
dc.subject | Geoweb | ca_CA |
dc.title | Integrating geodata discovery services with OpenSearch | ca_CA |
dc.type | info:eu-repo/semantics/masterThesis | ca_CA |
dc.educationLevel | Estudios de Postgrado | ca_CA |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |