GEOspatial Semantics (GEOS) is an emerging research area in the domain of geographic information systems and spatial databases. The fourth edition of GeoS aims at providing a forum for the exchange of state-of-the-art research results in the areas of modeling and processing of geospatial semantics. It has been largely recognized that Geospatial semantics play an important role for the development of next-generation spatial databases and geographic information systems, as well as specialized geospatial web services.

The previous editions of the conference – GeoS 2005, GeoS 2007, and GeoS 2009 in Mexico City, Mexico www.geosco.org have attracted all together about 120 submissions, from which 40 regular and 8 short articles have been published in Volumes 3799, 4853, and 5892 of the Lecture Notes in Computer Science respectively. People from 35 countries and 5 continents have attended previous GeoS conferences. The fourth edition GeoS 2011 is moving to Europe! It will be held 12-13 May 2011 in Brest, France the day after IF&GIS 2011 conference and under the umbrella of the Safer Seas III - 2011 conference.

GeoS traditionally brings together researchers whose expertise will address issues such as, but not limited to as far as they address geospatial semantics issues:

• Cognitive aspects of geospatial semantics
• Multicultural aspects of geospatial knowledge
• Geospatial ontologies
• Ontology-driven GIS
• Geospatial semantic models
• Models and languages for geo-ontologies
• Alignment and integration of geo-ontologies
• Formal representations of geospatial data
• Geospatial data integration and fusion
• Geospatial semantics-based approaches for query processing
• Geospatial information retrieval
• Geospatial semantics similarity
• Geospatial semantic Web
• Ontology-based visualization of geospatial data
• Conceptual models of dynamic geospatial environments
• Geospatial artificial intelligence
• Computational geospatial approaches
• Real-time geospatial systems
• Techniques to reduce geospatial information overload
• Context-based approaches for geospatial semantic information
• Context-based adaptation in GIS
• Personalization of geospatial semantic services

Publication of the proceedings in Lecture Notes in Computer Science.

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