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ICML
2002
IEEE
15 years 10 months ago
Discovering Hierarchy in Reinforcement Learning with HEXQ
An open problem in reinforcement learning is discovering hierarchical structure. HEXQ, an algorithm which automatically attempts to decompose and solve a model-free factored MDP h...
Bernhard Hengst
SIGMOD
2004
ACM
112views Database» more  SIGMOD 2004»
15 years 10 months ago
ORDPATHs: Insert-Friendly XML Node Labels
We introduce a hierarchical labeling scheme called ORDPATH that is implemented in the upcoming version of Microsoft? SQL ServerTM. ORDPATH labels nodes of an XML tree without requ...
Patrick E. O'Neil, Elizabeth J. O'Neil, Shankar Pa...
APVIS
2007
14 years 11 months ago
Navigation techniques for 2.5D graph layout
In this paper, we consider the problem of navigating graphs drawn in 2.5 dimensions. First, we define criteria for good navigation and then present various methods to satisfy som...
Adel Ahmed, Seok-Hee Hong
CVPR
2006
IEEE
15 years 12 months ago
Stereo Matching with Color-Weighted Correlation, Hierarchical Belief Propagation and Occlusion Handling
In this paper, we formulate an algorithm for the stereo matching problem with careful handling of disparity, discontinuity and occlusion. The algorithm works with a global matchin...
Qingxiong Yang, Liang Wang, Ruigang Yang, Henrik S...
PIMRC
2008
IEEE
15 years 4 months ago
A hierarchical structure based coverage repair in wireless sensor networks
—In this paper, we propose a new control method to cover “holes” in wireless sensor networks. Many applications often face the problem of holes when some sensor nodes are dis...
Jie Wu, Zhen Jiang