3456 search results - page 143 / 692 » Semantics in Spatial Databases |
SPATIALCOGNITION
2004
Springer
14 years 1 months ago
2004
Springer
Abstract. In this paper we apply a formal ontological framework in order to deconstruct two prominent approaches to navigation from cognitive robotics, the Spatial Semantic Hierarc...
DASFAA
2008
IEEE
14 years 2 months ago
2008
IEEE
Twig pattern matching (TPM) is the core operation of XML query processing. Existing approaches rely on either efficient data structures or novel labeling/indexing schemes to reduce...
CHI
2003
ACM
14 years 8 months ago
2003
ACM
Computer users deal with large amounts of personal media often face problems in managing and exploring it. This paper presents Semantic Regions, rectangular regions that enable us...
DAS
2004
Springer
14 years 1 months ago
2004
Springer
In this paper we present an integrated approach for semantic structure extraction in document images. Document images are initially processed to extract both their layout and logic...
ICDE
2000
IEEE
14 years 9 months ago
2000
IEEE
Optimizing queries that involve operations on spatial data requires estimating the selectivity and cost of these operations. In this paper, we focus on estimating the cost of spat...