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ER
2008
Springer
102views Database» more  ER 2008»
14 years 19 days ago
Retrieving Documents with Geographic References Using a Spatial Index Structure Based on Ontologies
Abstract. Both Geographic Information Systems and Information Retrieval have been very active research fields in the last decades. Lately, a new research field called Geographic In...
Miguel Rodríguez Luaces, Ángeles S. ...
AIRS
2006
Springer
14 years 2 months ago
Concept Propagation Based on Visual Similarity
Abstract. This paper presents an approach for image annotation propagation to images which have no annotations. In some specific domains, the assumption that visual similarity impl...
Jean-Pierre Chevallet, Nicolas Maillot, Joo-Hwee L...
SSD
2005
Springer
129views Database» more  SSD 2005»
14 years 4 months ago
Spatio-textual Indexing for Geographical Search on the Web
Many web documents refer to specific geographic localities and many people include geographic context in queries to web search engines. Standard web search engines treat the geogra...
Subodh Vaid, Christopher B. Jones, Hideo Joho, Mar...
LSSC
2001
Springer
14 years 3 months ago
Parallel Implementation of a Large-Scale 3-D Air Pollution Model
Abstract. Air pollution models can efficiently be used in different environmental studies. The atmosphere is the most dynamic component of the environment, where the pollutants ca...
Tzvetan Ostromsky, Zahari Zlatev
GIS
1999
ACM
14 years 3 months ago
Improved Bulk-Loading Algorithms for Quadtrees
Spatial indexes, such as the PMR quadtree, are important in spatial databases for efficient execution of queries involving spatial constraints, especially when the queries involv...
Gísli R. Hjaltason, Hanan Samet