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Thursday, November 1, 2007

Geospatial Vocabulary and Geospatial Ontologies Incubator Group Reports

Members of the W3C Geospatial Incubator Group (GeoXG) have published
their Incubator Group Reports on "W3C Geospatial Vocabulary" and "W3C
Geospatial Ontologies." The Incubator's work has been greatly influenced
by the work of the Open Geospatial Consortium (OGC), ISO/TC 211, and georss The Incubator has followed the lead of GeoRSS in seeking
to complement those efforts with a simpler baseline implementation of
geospatial resource description for the Web. The Vocabulary Report
defines a basic ontology and OWL vocabulary for representation of
geospatial properties for Web resources. Specifically, it (1) discusses
the need for updating the W3C 2003 geo vocabulary; (2) presents a model
for basic feature properties of Web resources; (3) presents realizations
of these feature property elements as XML and as OWL/RDF vocabularies;
(4) describes use of the XML elements in Web feeds such as RSS and Atom.
The Ontologies Report supplies an overview and description of geospatial
foundation ontologies to represent geospatial concepts and properties
for use on the Worldwide Web. Background: "Issues in geographical
representation are many and often parallel those in the Web as a whole,
from resource identifiers to machine-readable semantics. Just as there
are both physical (IP) and conceptual (domain namespace) locators on
the World Wide Web, there are physical (latitude-longitude coordinates
and street addresses) and conceptual (placenames and political divisions)
locators on the Local Web. Geospatial concepts and relationships are
at once as possible and difficult to define with formal semantics as
those which express any other resource meaning. Geospatial aspects of
progress from the Web of text and tags to the Semantic Web are just
as challenging and important." The W3C Geospatial Incubator Group,
part of W3C's Incubator Activity, was chartered to begin addressing
issues of location and geographical properties of resources for the Web
of today and tomorrow, by taking a concrete step to update the W3C GEO
vocabulary, laying the groundwork for a more comprehensive geospatial
ontology, and formulating a proposal for a W3C Local Web working group
to develop recommendations to further the Local Web. Sponsoring Members
inclide the Open Geospatial Consortium, SRI. USC ISI, Stanford
University, and Oracle Corporation. More Information See also the Ontology Report: Click Here

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