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CSDA
2011
15 years 1 days ago
Mapping electron density in the ionosphere: A principal component MCMC algorithm
The outer layers of the Earth’s atmosphere are known as the ionosphere, a plasma of free electrons and positively charged atomic ions. The electron density of the ionosphere var...
Eman Khorsheed, Merrilee Hurn, Christopher Jenniso...
DCC
2011
IEEE
15 years 1 days ago
Distributed Quantization of Order Statistics with Applications to CSI Feedback
Feedback of channel state information (CSI) in wireless systems is essential in order to exploit multi-user diversity and achieve the highest possible performace. When each spatia...
Matthew Pugh, Bhaskar D. Rao
ECCC
2011
234views ECommerce» more  ECCC 2011»
15 years 1 days ago
On the complexity of computational problems regarding distributions (a survey)
We consider two basic computational problems regarding discrete probability distributions: (1) approximating the statistical difference (aka variation distance) between two given d...
Oded Goldreich, Salil P. Vadhan
ECCC
2011
205views ECommerce» more  ECCC 2011»
15 years 1 days ago
Graphs of Bounded Treewidth can be Canonized in AC1
In recent results the complexity of isomorphism testing on graphs of bounded treewidth is improved to TC1 [GV06] and further to LogCFL [DTW10]. The computation of canonical forms ...
Fabian Wagner
IAJIT
2011
15 years 21 hour ago
Multilayer model for Arabic text compression
: This article describes a multilayer model-based approach for text compression. It uses linguistic information to develop a multilayer decomposition model of the text in order to ...
Arafat Awajan