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CORR
2006
Springer
104views Education» more  CORR 2006»
14 years 11 months ago
On Universally Decodable Matrices for Space-Time Coding
The notion of universally decodable matrices (UDMs) was recently introduced by Tavildar and Viswanath while studying slow fading channels. It turns out that the problem of construc...
Pascal O. Vontobel, Ashwin Ganesan
CORR
2010
Springer
135views Education» more  CORR 2010»
14 years 12 months ago
Constant-Weight Gray Codes for Local Rank Modulation
We consider the local rank-modulation scheme in which a sliding window going over a sequence of real-valued variables induces a sequence of permutations. The local rankmodulation, ...
Moshe Schwartz
TIT
2008
81views more  TIT 2008»
14 years 11 months ago
Codes Defined by Forms of Degree 2 on Quadric Surfaces
We study the functional codes C2(X) defined on projective varieties X, in the case where X P3 is a 1-degenerate quadric or a non-degenerate quadric (hyperbolic or elliptic). We fi...
Frédéric A. B. Edoukou
TIT
2002
73views more  TIT 2002»
14 years 11 months ago
The minimum distance of the duals of binary irreducible cyclic codes
Abstract--Irreducible cyclic codes have been an interesting subject of study for many years. The weight distribution of some of them have been determined. In this paper, we determi...
Cunsheng Ding, Tor Helleseth, Harald Niederreiter,...
ICMLA
2007
15 years 1 months ago
Automatic medical coding of patient records via weighted ridge regression
In this paper, we apply weighted ridge regression to tackle the highly unbalanced data issue in automatic largescale ICD-9 coding of medical patient records. Since most of the ICD...
Jian-Wu Xu, Shipeng Yu, Jinbo Bi, Lucian Vlad Lita...