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» On the optimality of the neighbor-joining algorithm
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CIKM
2005
Springer
16 years 13 days ago
Optimizing cursor movement in holistic twig joins
Holistic twig join algorithms represent the state of the art for evaluating path expressions in XML queries. Using inverted indexes on XML elements, holistic twig joins move a set...
Marcus Fontoura, Vanja Josifovski, Eugene J. Sheki...
GIS
2006
ACM
16 years 8 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...
GECCO
2007
Springer
172views Optimization» more  GECCO 2007»
16 years 1 months ago
A multimodal particle swarm optimizer based on fitness Euclidean-distance ratio
One of the most critical issues that remains to be fully addressed in existing multimodal evolutionary algorithms is the difficulty in pre-specifying parameters used for estimatin...
Xiaodong Li
CEC
2008
IEEE
16 years 1 months ago
DEACO: Hybrid Ant Colony Optimization with Differential Evolution
—Ant Colony Optimization (ACO) algorithm is a novel meta-heuristic algorithm for the approximate solution of combinatorial optimization problems that has been inspired by the for...
Xiangyin Zhang, Haibin Duan, Jiqiang Jin
CGO
2006
IEEE
16 years 28 days ago
Fast and Effective Orchestration of Compiler Optimizations for Automatic Performance Tuning
Although compile-time optimizations generally improve program performance, degradations caused by individual techniques are to be expected. One promising research direction to ove...
Zhelong Pan, Rudolf Eigenmann