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ICALP
2001
Springer
15 years 4 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...
UAI
2008
15 years 1 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...
ORL
2008
91views more  ORL 2008»
14 years 12 months 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 6 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...
JMLR
2006
125views more  JMLR 2006»
14 years 12 months ago
Efficient Learning of Label Ranking by Soft Projections onto Polyhedra
We discuss the problem of learning to rank labels from a real valued feedback associated with each label. We cast the feedback as a preferences graph where the nodes of the graph ...
Shai Shalev-Shwartz, Yoram Singer