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» Performance Comparison of Point and Spatial Access Methods
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ICDE
2007
IEEE
124views Database» more  ICDE 2007»
15 years 11 months ago
On MBR Approximation of Histories for Historical Queries: Expectations and Limitations
Traditional approaches for efficiently processing historical queries, where a history is a multidimensional timeseries, employ a two step filter-and-refine scheme. In the filter s...
Reza Sherkat, Davood Rafiei
JSCIC
2007
89views more  JSCIC 2007»
14 years 9 months ago
Dispersion and Dissipation Error in High-Order Runge-Kutta Discontinuous Galerkin Discretisations of the Maxwell Equations
Different time-stepping methods for a nodal high-order discontinuous Galerkin discretisation of the Maxwell equations are discussed. A comparison between the most popular choices o...
D. Sármány, M. A. Botchev, Jaap J. W...
FGR
2004
IEEE
160views Biometrics» more  FGR 2004»
15 years 1 months ago
A Comparison of Shape Constrained Facial Feature Detectors
We consider the problem of robustly and accurately locating facial features. The relative positions of different feature points are represented using a statistical shape model. We...
David Cristinacce, Timothy F. Cootes
PODS
1995
ACM
124views Database» more  PODS 1995»
15 years 1 months ago
Window Query-Optimal Clustering of Spatial Objects
During the last decade various spatial data structures have been designed and compared against each other with respect to their performance. Still missing is a lower bound result,...
Bernd-Uwe Pagel, Hans-Werner Six, Mario Winter
GIS
2006
ACM
15 years 11 months ago
Query optimizer for spatial join operations
This paper presents a query optimizer module based on cost estimation that chooses the best filtering step algorithm to perform a specific spatial join operation. A set of express...
Cirano Iochpe, João Luiz Dihl Comba, Miguel...