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SAC
2011
ACM
14 years 11 months ago
A quasi-Newton acceleration for high-dimensional optimization algorithms
Abstract In many statistical problems, maximum likelihood estimation by an EM or MM algorithm suffers from excruciatingly slow convergence. This tendency limits the application of ...
Hua Zhou, David Alexander, Kenneth Lange
VTC
2008
IEEE
146views Communications» more  VTC 2008»
15 years 10 months ago
A Frequency-Domain Correlation Matrix Estimation Algorithm for MIMO-OFDM Channel Estimation
— The second-order statistics of a time-domain signal are very often used in blind and semi-blind channel estimation. Considering that the received signal in MIMO-OFDM systems mi...
Feng Wan, Wei-Ping Zhu, M. N. S. Swamy
CGF
2008
121views more  CGF 2008»
15 years 4 months ago
Tensor Clustering for Rendering Many-Light Animations
Rendering animations of scenes with deformable objects, camera motion, and complex illumination, including indirect lighting and arbitrary shading, is a long-standing challenge. P...
Milos Hasan, Edgar Velázquez-Armendá...
CVPR
2006
IEEE
16 years 6 months ago
Scalable Monocular SLAM
Localization and mapping in unknown environments becomes more difficult as the complexity of the environment increases. With conventional techniques, the cost of maintaining estim...
Ethan Eade, Tom Drummond
ICPR
2008
IEEE
15 years 10 months ago
Invariant visual patterns for video copy detection
Large scale video copy detection task requires compact feature insensitive to various copy changes. Based on local feature trajectory behavior we discover invariant visual pattern...
Xiao Wu, Yongdong Zhang, Yufeng Wu, Junbo Guo, Jin...