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SDM
2011
SIAM
241views Data Mining» more  SDM 2011»
13 years 1 months ago
A Fast Algorithm for Sparse PCA and a New Sparsity Control Criteria
Sparse principal component analysis (PCA) imposes extra constraints or penalty terms to the standard PCA to achieve sparsity. In this paper, we first introduce an efficient algor...
Yunlong He, Renato Monteiro, Haesun Park
ICC
2011
IEEE
201views Communications» more  ICC 2011»
12 years 10 months ago
Channel Aggregation in Cognitive Radio Networks with Practical Considerations
—In cognitive radio (CR) networks, licensed spectrum that can be shared by secondary users (SUs) is always restricted by the needs of primary users (PUs). Although channel aggreg...
Bo Gao, Yaling Yang, Jung-Min Park 0001
INFOCOM
2012
IEEE
12 years 1 months ago
Achievable transmission capacity of cognitive mesh networks with different media access control
—Spectrum sharing is an emerging mechanism to resolve the conflict between the spectrum scarcity and the growing demands for the wireless broadband access. In this paper we inve...
Tao Jing, Xiuying Chen, Yan Huo, Xiuzhen Cheng
TOG
2012
307views Communications» more  TOG 2012»
12 years 1 months ago
Ghost SPH for animating water
We propose a new ghost fluid approach for free surface and solid boundary conditions in Smoothed Particle Hydrodynamics (SPH) liquid simulations. Prior methods either suffer from...
Hagit Schechter, Robert Bridson
CVPR
2012
IEEE
12 years 1 months ago
Unsupervised learning of translation invariant occlusive components
We study unsupervised learning of occluding objects in images of visual scenes. The derived learning algorithm is based on a probabilistic generative model which parameterizes obj...
Zhenwen Dai, Jörg Lücke