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AUTOMATICA
2008
74views more  AUTOMATICA 2008»
15 years 18 days ago
Policy iteration based feedback control
It is well known that stochastic control systems can be viewed as Markov decision processes (MDPs) with continuous state spaces. In this paper, we propose to apply the policy iter...
Kan-Jian Zhang, Yan-Kai Xu, Xi Chen, Xi-Ren Cao
JUCS
2010
134views more  JUCS 2010»
14 years 11 months ago
Newton Method for Nonlinear Dynamic Systems with Adaptive Time Stepping
Abstract: This paper presents a nonlinear solver based on the Newton-Krylov methods, where the Newton equations are solved by Krylov-subspace type approaches. We focus on the solut...
Wensheng Shen, Changjiang Zhang, Jun Zhang, Xiaoqi...
122
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CVPR
2006
IEEE
16 years 2 months ago
A Closed Form Solution to Natural Image Matting
Interactive digital matting, the process of extracting a foreground object from an image based on limited user input, is an important task in image and video editing. From a compu...
Anat Levin, Dani Lischinski, Yair Weiss
ICIP
2010
IEEE
15 years 5 months ago
Estimation of linear deformations of 3D objects
We propose a registration method to find affine transformations between 3D objects by constructing and solving an overdetermined system of polynomial equations. We utilize voxel...
Attila Tanács, Natasa Sladoje, Joakim Lindblad, a...
STOC
2002
ACM
118views Algorithms» more  STOC 2002»
16 years 24 days ago
On the advantage over a random assignment
: We initiate the study of a new measure of approximation. This measure compares the performance of an approximation algorithm to the random assignment algorithm. This is a useful ...
Johan Håstad, Srinivasan Venkatesh