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GIS
1999
ACM
15 years 5 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
100
Voted
ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
15 years 5 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
123
Voted
COLOGNETWENTE
2009
15 years 1 months ago
Improved Strategies for Branching on General Disjunctions
Abstract Within the context of solving Mixed-Integer Linear Programs by a Branch-andCut algorithm, we propose a new strategy for branching. Computational experiments show that, on ...
Gérard Cornuéjols, Leo Liberti, Giac...
101
Voted
ICANN
2010
Springer
15 years 1 months ago
A Directional Laplacian Density for Underdetermined Audio Source Separation
In this work, a novel probability distribution is proposed to model sparse directional data. The Directional Laplacian Distribution (DLD) is a hybrid between the linear Laplacian d...
Nikolaos Mitianoudis
GECCO
2008
Springer
170views Optimization» more  GECCO 2008»
15 years 1 months ago
Evolving prediction weights using evolution strategy
The evolution strategy is one of the strongest evolutionary algorithms for optimizing real-value vectors. In this paper, we study how to use it for the evolution of prediction wei...
Trung Hau Tran, Cédric Sanza, Yves Duthen