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» Self-complementary circulant graphs
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CVPR
2011
IEEE
13 years 2 months ago
Contour cut: identifying salient contours in images by solving a Hermitian eigenvalue problem
The problem of finding one-dimensional structures in images and videos can be formulated as a problem of searching for cycles in graphs. In [11], an untangling-cycle cost functio...
Ryan Kennedy, Jean Gallier, Jianbo Shi
TC
1998
13 years 7 months ago
Optimal Elections in Faulty Loop Networks and Applications
—Loop networks (or Hamiltonian circulant graphs) are a popular class of fault-tolerant network topologies which include rings and complete graphs. For this class, the fundamental...
Bernard Mans, Nicola Santoro
STOC
2009
ACM
144views Algorithms» more  STOC 2009»
14 years 8 months ago
Homology flows, cohomology cuts
We describe the first algorithm to compute maximum flows in surface-embedded graphs in near-linear time. Specifically, given a graph embedded on a surface of genus g, with two spe...
Erin W. Chambers, Jeff Erickson, Amir Nayyeri
IPPS
2009
IEEE
14 years 2 months ago
Toward adjoinable MPI
4 Automatic differentiation is the primary means of obtaining analytic5 derivatives from a numerical model given as a computer program. There-6 fore, it is an essential productivi...
Jean Utke, Laurent Hascoët, Patrick Heimbach,...
JGT
2010
103views more  JGT 2010»
13 years 5 months ago
Proof of a conjecture on fractional Ramsey numbers
: Jacobson, Levin, and Scheinerman introduced the fractional Ramsey function rf (a1,a2, ...,ak) as an extension of the classical definition for Ramsey numbers. They determined an e...
Jason Brown, Richard Hoshino