نتایج جستجو برای: geospatial data

تعداد نتایج: 2413928  

2011
Robert Battle Dave Kolas

As the amount of Linked Open Data on the web increases, so does the amount of this data with an inherent spatial context. Without spatial reasoning, however, the value of this additional context is limited. In this paper we look at the overall state of geospatial data in the Semantic Web, with a focus on the upcoming standard GeoSPARQL. We describe the motivation for GeoSPARQL, an example use c...

Journal: :Trans. Data Privacy 2009
Elisa Bertino Maria Luisa Damiani

The first Workshop on Security and Privacy in GIS and LBS (SPRINGL 2008) was organized on November 4, 2008 at Irvine (CA) in conjunction with the SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM GIS 2008). The goal of the SPRINGL workshop series is to provide a forum for researchers working in the area of geospatial data security and privacy. Both security ...

2014
Kostis Kyzirakos Ioannis Vlachopoulos Dimitrianos Savva Stefan Manegold Manolis Koubarakis

In this paper we present the tool GeoTriples that allows the transformation of Earth Observation data and geospatial data into RDF graphs, by using and extending the R2RML mapping language to be able to deal with the specificities of geospatial data. GeoTriples is a semiautomated tool that transforms geospatial information into RDF following the state of the art vocabularies like GeoSPARQL and ...

2016
Umesh Chandra Kamal Jain

The creation and management of geospatial data is always tedious requires huge budget, time and manual efforts. Therefore, the future of several important services including location-based services and disaster information system, which need geospatial data remains a matter of concern. Expert geoportal system (EGPS) is a tool based on a sophisticated approach for providing diverse geospatial se...

2014
Giorgos Giannopoulos Thomas Maroulis Dimitrios Skoutas Nikos Karagiannakis Spiros Athanasiou

In this paper, we present FAGI-tr, a tool for aligning RDF vocabularies with respect to their geospatial aspect. The tool provides a framework for (a) loading a source and a target geospatial RDF dataset, (b) identifying vocabularies for representing geospatial RDF data, (c) selecting, from both datasets, the representations to be considered for processing, (d) selecting a target vocabulary and...

2008
Pouria Amirian Ali A. Alesheikh

Open GIS Consortium (OGC) Geospatial Web services have been introduced to overcome spatial non-interoperability problem associated with most geospatial processing systems. Although OGC geospatial Web services provide interoperability among heterogeneous geospatial processing systems, in some cases they can not provide required performance and efficiency. This paper proposes a hybrid architectur...

Journal: :Concurrency and Computation: Practice and Experience 2008
Liping Di Aijun Chen Wenli Yang Yang Liu Yaxing Wei Piyush Mehrotra Chaumin Hu Dean N. Williams

Geospatial science is the science and art of acquiring, archiving, manipulating, analyzing, communicating, and utilizing spatially explicit data for understanding physical, biological, and social systems on the Earth’s surface or near the surface. In order to share distributed geospatial resources and facilitate the interoperability, the Open Geospatial Consortium (OGC), an industry-government-...

Journal: :KN - Journal of Cartography and Geographic Information 2020

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