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COCOON
2010
Springer
14 years 26 days ago
Exact and Approximation Algorithms for Geometric and Capacitated Set Cover Problems
Piotr Berman, Marek Karpinski, Andrzej Lingas
APPROX
2008
Springer
135views Algorithms» more  APPROX 2008»
13 years 10 months ago
The Directed Minimum Latency Problem
We study the directed minimum latency problem: given an n-vertex asymmetric metric (V, d) with a root vertex r V , find a spanning path originating at r that minimizes the sum of...
Viswanath Nagarajan, R. Ravi
DCOSS
2008
Springer
13 years 10 months ago
Local PTAS for Independent Set and Vertex Cover in Location Aware Unit Disk Graphs
We present the first local approximation schemes for maximum independent set and minimum vertex cover in unit disk graphs. In the graph model we assume that each node knows its geo...
Andreas Wiese, Evangelos Kranakis
FOCS
2003
IEEE
14 years 1 months ago
Paths, Trees, and Minimum Latency Tours
We give improved approximation algorithms for a variety of latency minimization problems. In particular, we give a 3.591 -approximation to the minimum latency problem, improving o...
Kamalika Chaudhuri, Brighten Godfrey, Satish Rao, ...
IPL
2008
135views more  IPL 2008»
13 years 8 months ago
On the Positive-Negative Partial Set Cover problem
The Positive-Negative Partial Set Cover problem is introduced and its complexity, especially the hardness-of-approximation, is studied. The problem generalizes the Set Cover probl...
Pauli Miettinen