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» Approximability of Minimum AND-Circuits
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CATS
2006
14 years 11 months ago
On the Approximability of Maximum and Minimum Edge Clique Partition Problems
We consider the following clustering problems: given a general undirected graph, partition its vertices into disjoint clusters such that each cluster forms a clique and the number...
Anders Dessmark, Jesper Jansson, Andrzej Lingas, E...
INFOCOM
2012
IEEE
13 years 2 days ago
On the construction of data aggregation tree with minimum energy cost in wireless sensor networks: NP-completeness and approxima
—In many applications, it is a basic operation for the sink to periodically collect reports from all sensors. Since the data gathering process usually proceeds for many rounds, i...
Tung-Wei Kuo, Ming-Jer Tsai
RANDOM
1999
Springer
15 years 1 months ago
Approximating Minimum Manhattan Networks
Joachim Gudmundsson, Christos Levcopoulos, Giri Na...
MFCS
1998
Springer
15 years 1 months ago
Minimum Propositional Proof Length is NP-Hard to Linearly Approximate
Michael Alekhnovich, Samuel R. Buss, Shlomo Moran,...
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ESA
1997
Springer
78views Algorithms» more  ESA 1997»
15 years 1 months ago
Improved Approximations for Minimum Cardinality Quadrangulations of Finite Element Meshes
Matthias Müller-Hannemann, Karsten Weihe