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SIAMCOMP
2008
124views more  SIAMCOMP 2008»
15 years 6 months ago
A Faster, Better Approximation Algorithm for the Minimum Latency Problem
We give a 7.18-approximation algorithm for the minimum latency problem that uses only O(n log n) calls to the prize-collecting Steiner tree (PCST) subroutine of Goemans and Willia...
Aaron Archer, Asaf Levin, David P. Williamson
STOC
2002
ACM
144views Algorithms» more  STOC 2002»
16 years 7 months ago
Improved decremental algorithms for maintaining transitive closure and all-pairs shortest paths
We present improved algorithms for maintaining transitive closure and all-pairs shortest paths/distances in a digraph under deletion of edges. For the problem of transitive closur...
Surender Baswana, Ramesh Hariharan, Sandeep Sen
COMPGEOM
2009
ACM
16 years 1 months ago
Approximate center points with proofs
We present the Iterated-Tverberg algorithm, the first deterministic algorithm for computing an approximate centerpoint of a set S ∈ Rd with running time sub-exponential in d. T...
Gary L. Miller, Donald Sheehy
INFOCOM
2005
IEEE
16 years 13 days ago
On neighbor discovery in wireless networks with directional antennas
We consider the problem of neighbor discovery in static wireless ad hoc networks with directional antennas. We propose several probabilistic algorithms in which nodes perform rand...
Sudarshan Vasudevan, James F. Kurose, Donald F. To...
SAGA
2007
Springer
16 years 29 days ago
Probabilistic Techniques in Algorithmic Game Theory
We consider applications of probabilistic techniques in the framework of algorithmic game theory. We focus on three distinct case studies: (i) The exploitation of the probabilistic...
Spyros C. Kontogiannis, Paul G. Spirakis