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» The Linear Complexity of a Graph
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90
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AAECC
2007
Springer
118views Algorithms» more  AAECC 2007»
15 years 6 months ago
The "Art of Trellis Decoding" Is NP-Hard
Given a linear code C, the fundamental problem of trellis decoding is to find a coordinate permutation of C that yields a code C′ whose minimal trellis has the least state-compl...
Navin Kashyap
87
Voted
ICALP
2001
Springer
15 years 5 months ago
Minimal Tail-Biting Trellises for Certain Cyclic Block Codes Are Easy to Construct
We give simple algorithms for the construction of generator matrices for minimal tail-biting trellises for a powerful and practical subclass of the linear cyclic codes, from which ...
Priti Shankar, P. N. A. Kumar, Harmeet Singh, B. S...
114
Voted
UAI
2008
15 years 2 months ago
Discovering Cyclic Causal Models by Independent Components Analysis
We generalize Shimizu et al's (2006) ICA-based approach for discovering linear non-Gaussian acyclic (LiNGAM) Structural Equation Models (SEMs) from causally sufficient, conti...
Gustavo Lacerda, Peter Spirtes, Joseph Ramsey, Pat...
116
Voted
ORL
2008
91views more  ORL 2008»
15 years 15 days ago
On the integrality ratio for tree augmentation
We show that the standard linear programming relaxation for the tree augmentation problem in undirected graphs has an integrality ratio that approaches 3 2 . This refutes a conjec...
Joseph Cheriyan, Howard J. Karloff, Rohit Khandeka...
CORR
2010
Springer
114views Education» more  CORR 2010»
14 years 7 months ago
Counting Unique-Sink Orientations
Unique-sink orientations (USOs) are an abstract class of orientations of the ncube graph. We consider some classes of USOs that are of interest in connection with the linear compl...
Jan Foniok, Bernd Gärtner, Lorenz Klaus, Mark...