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123
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ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
15 years 8 months ago
Multiple Range Query Optimization in Spatial Databases
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
Apostolos Papadopoulos, Yannis Manolopoulos
142
Voted
CDC
2009
IEEE
180views Control Systems» more  CDC 2009»
15 years 7 months ago
Robustness analysis for Least Squares kernel based regression: an optimization approach
—In kernel based regression techniques (such as Support Vector Machines or Least Squares Support Vector Machines) it is hard to analyze the influence of perturbed inputs on the ...
Tillmann Falck, Johan A. K. Suykens, Bart De Moor
136
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SIAMJO
2008
212views more  SIAMJO 2008»
15 years 3 months ago
Convergence Rate of an Optimization Algorithm for Minimizing Quadratic Functions with Separable Convex Constraints
A new active set algorithm for minimizing quadratic functions with separable convex constraints is proposed by combining the conjugate gradient method with the projected gradient. ...
Radek Kucera
77
Voted
TSP
2008
59views more  TSP 2008»
15 years 3 months ago
Optimization of Spatiotemporal Apertures in Channel Sounding
Abstract--In this paper, we investigate the impact of the spatiotemporal aperture of a channel sounding system equipped with antenna arrays at the transmitter and receiver on the a...
Troels Pedersen, Claus Pedersen, Xuefeng Yin, Bern...
101
Voted
JMMA
2002
71views more  JMMA 2002»
15 years 3 months ago
Optimal Hierarchies for Quadrilateral Surfaces
Abstract. Multiresolution representation of quadrilateral surface approximation (MRQSA) is a useful representation for progressive graphics transmission in networks. Based on two r...
Kuo-Liang Chung, Wen-Ming Yan, Jung-Gen Wu