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» Revisiting Two Classical Results on Graph Spectra
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STOC
2010
ACM
228views Algorithms» more  STOC 2010»
14 years 13 days ago
On the searchability of small-world networks with arbitrary underlying structure
Revisiting the “small-world” experiments of the ’60s, Kleinberg observed that individuals are very effective at constructing short chains of acquaintances between any two p...
Pierre Fraigniaud and George Giakkoupis
JGT
2010
103views more  JGT 2010»
13 years 6 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
COCO
2007
Springer
114views Algorithms» more  COCO 2007»
14 years 1 months ago
Directed Planar Reachability is in Unambiguous Log-Space
We make progress in understanding the complexity of the graph reachability problem in the context of unambiguous logarithmic space computation; a restricted form of nondeterminism....
Chris Bourke, Raghunath Tewari, N. V. Vinodchandra...
JGAA
2006
83views more  JGAA 2006»
13 years 7 months ago
On the approximation of Min Split-coloring and Min Cocoloring
We consider two problems, namely Min Split-coloring and Min Cocoloring, that generalize the classical Min Coloring problem by using not only stable sets but also cliques to cover ...
Marc Demange, Tinaz Ekim, Dominique de Werra
EWSN
2010
Springer
14 years 4 months ago
Querying Dynamic Wireless Sensor Networks with Non-revisiting Random Walks
The simplicity and low-overhead of random walks have made them a popular querying mechanism for Wireless Sensor Networks. However, most of the related work is of theoretical nature...
Marco Zuniga, Chen Avin, Manfred Hauswirth