Sciweavers

3969 search results - page 310 / 794
» Query Processing Using Ontologies
Sort
View
ADC
2003
Springer
94views Database» more  ADC 2003»
15 years 9 months ago
Multi-resolution Algorithms for Building Spatial Histograms
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
Qing Liu, Yidong Yuan, Xuemin Lin
COSIT
2007
Springer
136views GIS» more  COSIT 2007»
15 years 10 months ago
Spatial Semantics in Difference Spaces
Higher level semantics are considered useful in the geospatial domain, yet there is no general consensus on the form these semantics should take. Indeed, knowledge representation p...
Vlad Tanasescu
MODELS
2007
Springer
15 years 10 months ago
On Metamodeling in Megamodels
Model-Driven Engineering (MDE) introduced the notion of metamodeling as the main means for defining modeling languages. As a well organized engineering discipline, MDE should also ...
Dragan Gasevic, Nima Kaviani, Marek Hatala
ADBIS
2009
Springer
108views Database» more  ADBIS 2009»
15 years 11 months ago
Probabilistic Granule-Based Inside and Nearest Neighbor Queries
The development of location-based services and advances in the field of mobile computing have motivated an intensive research effort devoted to the efficient processing of locati...
Sergio Ilarri, Antonio Corral, Carlos Bobed, Eduar...
VLDB
2005
ACM
139views Database» more  VLDB 2005»
15 years 9 months ago
Tree-Pattern Queries on a Lightweight XML Processor
Popular XML languages, like XPath, use “treepattern” queries to select nodes based on their structural characteristics. While many processing methods have already been propose...
Mirella Moura Moro, Zografoula Vagena, Vassilis J....