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GIS
2005
ACM
15 years 11 months ago
2005
ACM
The R*-tree, as a state-of-the-art spatial index, has already found its way into commercial systems like Oracle. In this paper, we aim at improving query performance of the R*tree...
AINA
2007
IEEE
15 years 4 months ago
2007
IEEE
In this paper we propose a distributed, self organizing, robust and energy efficient data gathering algorithm for sensor networks operating in environments where all the sensor n...
CPM
2004
Springer
15 years 3 months ago
2004
Springer
Given two undirected trees T and P, the Subtree Homeomorphism Problem is to find whether T has a subtree t that can be transformed into P by removing entire subtrees, as well as ...
ICDM
2006
IEEE
15 years 3 months ago
2006
IEEE
Hierarchies are an intuitive and effective organization paradigm for data. Of late there has been considerable research on automatically learning hierarchical organizations of dat...
INFOCOM
2002
IEEE
15 years 2 months ago
2002
IEEE
— Most of the currently deployed multicast protocols (e.g. DVMRP, PIM, MOSPF) build one shortest path multicast tree per sender, the tree being rooted at the sender’s subnetwor...