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» On Linear Secret Sharing for Connectivity in Directed Graphs
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SODA
2012
ACM
225views Algorithms» more  SODA 2012»
11 years 9 months ago
Approximating rooted Steiner networks
The Directed Steiner Tree (DST) problem is a cornerstone problem in network design. We focus on the generalization of the problem with higher connectivity requirements. The proble...
Joseph Cheriyan, Bundit Laekhanukit, Guyslain Nave...
SODA
2012
ACM
243views Algorithms» more  SODA 2012»
11 years 9 months ago
Bidimensionality and geometric graphs
Bidimensionality theory was introduced by Demaine et al. [JACM 2005 ] as a framework to obtain algorithmic results for hard problems on minor closed graph classes. The theory has ...
Fedor V. Fomin, Daniel Lokshtanov, Saket Saurabh
SODA
1992
ACM
123views Algorithms» more  SODA 1992»
13 years 8 months ago
Computing Minimal Spanning Subgraphs in Linear Time
Let P be a property of undirected graphs. We consider the following problem: given a graph G that has property P, nd a minimal spanning subgraph of G with property P. We describe ...
Xiaofeng Han, Pierre Kelsen, Vijaya Ramachandran, ...
CCS
2006
ACM
13 years 11 months ago
An efficient key establishment scheme for secure aggregating sensor networks
Key establishment is a fundamental prerequisite for secure communication in wireless sensor networks. A new node joining the network needs to efficiently and autonomously set up s...
Erik-Oliver Blaß, Martina Zitterbart
CSR
2008
Springer
13 years 9 months ago
Comparing Universal Covers in Polynomial Time
The universal cover TG of a connected graph G is the unique (possible infinite) tree covering G, i.e., that allows a locally bijective homomorphism from TG to G. Universal covers h...
Jirí Fiala, Daniël Paulusma