The development of geographical information systems (GIS) and the interoperability
between these systems demands new requirements for the description of the underlying …

This paper introduces a geographic information system architecture based on ontologies.
Ontology plays a central role in the definition of all aspects and components of an …

Today, there is a huge amount of data gathered about the Earth, not only from new spatial
information systems, but also from new and more sophisticated data collection technologies …

Integration of geographic information has increased in importance because of new
possibilities arising from the interconnected world and the increasing availability of …

The last few years have seen a growing interest in approaches that define methodologies to
automatically extract semantics from databases by using ontologies. Geographic data are …

In current spatial data infrastructures (SDIs), it is still often difficult to effectively exchange or
re-use geographic data sets. A main reason for this is semantic heterogeneity, which occurs …

The integration of information of different kinds, such as spatial and alphanumeric at different
levels of detail, is a challenge. While a solution is not reached, it is widely recognized that …

With the growth of the World Wide Web has come the insight that currently available
methods for finding and using information on the web are often insufficient. In order to move …

A geospatial knowledge infrastructure consists of a set of interoperable components,
including software, information, hardware, procedures and standards, that work together to …

Four centuries after René Descartes watched a fly walk across his ceiling and wondered
how to capture its position (Gribbin 2002), we use Cartesian coordinates routinely to …