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PVLDB
2010
225views more  PVLDB 2010»
13 years 6 days ago
Efficient Processing of Top-k Spatial Preference Queries
Top-k spatial preference queries return a ranked set of the k best data objects based on the scores of feature objects in their spatial neighborhood. Despite the wide range of loc...
João B. Rocha-Junior, Akrivi Vlachou, Chris...
ADBIS
1998
Springer
100views Database» more  ADBIS 1998»
13 years 9 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
CIKM
2010
Springer
13 years 3 months ago
Index structures for efficiently searching natural language text
Many existing indexes on text work at the document granularity and are not effective in answering the class of queries where the desired answer is only a term or a phrase. In this...
Pirooz Chubak, Davood Rafiei
CORR
2010
Springer
153views Education» more  CORR 2010»
13 years 5 months ago
Multidimensional Data Structures and Techniques for Efficient Decision Making
: - In this paper we present several novel efficient techniques and multidimensional data structures which can improve the decision making process in many domains. We consider onli...
Madalina Ecaterina Andreica, Mugurel Ionut Andreic...
ICRA
2009
IEEE
196views Robotics» more  ICRA 2009»
13 years 3 months ago
CHOMP: Gradient optimization techniques for efficient motion planning
Abstract-- Existing high-dimensional motion planning algorithms are simultaneously overpowered and underpowered. In domains sparsely populated by obstacles, the heuristics used by ...
Nathan D. Ratliff, Matt Zucker, J. Andrew Bagnell,...