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In recent years the OpenGIS technology standards have been developed by the Open Geospatial Consortium (OGC), which provide the essential basis for syntactic interoperability of geographic information...
During the last decade technological developments have facilitated the access to geo-information and have made it easier to manipulate, reducing the effort and skills required to exploit it effective...
It is estimated that more than 80% of data that human beings have collected so far are geospatial data. In order for the geospatial data to be useful, information has to be extracted from the data and...
EXTENDING GEO-INFORMATION SERVICES: A VIRTUAL ARCHITECTURE FOR SPATIAL DATA INFRASTRUCTURES.

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