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CORR
2010
Springer
104views Education» more  CORR 2010»
14 years 9 months ago
Approximating the minimum directed tree cover
Given a directed graph G with non negative cost on the arcs, a directed tree cover of G is a directed tree such that either head or tail (or both of them) of every arc in G is touc...
Viet Hung Nguyen
ISAAC
2009
Springer
140views Algorithms» more  ISAAC 2009»
15 years 4 months ago
Shifting Strategy for Geometric Graphs without Geometry
We give a simple framework which is an alternative to the celebrated and widely used shifting strategy of Hochbaum and Maass [J. ACM, 1985] which has yielded efficient algorithms ...
Imran A. Pirwani
COCOON
2006
Springer
15 years 1 months ago
Improved On-Line Broadcast Scheduling with Deadlines
We study an on-line broadcast scheduling problem in which requests have deadlines, and the objective is to maximize the weighted throughput, i.e., the weighted total length of the ...
Feifeng Zheng, Stanley P. Y. Fung, Wun-Tat Chan, F...
LATIN
2010
Springer
15 years 4 months ago
Sharp Separation and Applications to Exact and Parameterized Algorithms
Many divide-and-conquer algorithms employ the fact that the vertex set of a graph of bounded treewidth can be separated in two roughly balanced subsets by removing a small subset o...
Fedor V. Fomin, Daniel Lokshtanov, Fabrizio Grando...
ICRA
2008
IEEE
205views Robotics» more  ICRA 2008»
15 years 4 months ago
Minimum time point assignment for coverage by two constrained robots
— This paper focuses on the assignment of discrete points to two robots, in the presence of geometric and kinematic constraints between the robots. The individual points have dif...
Nilanjan Chakraborty, Srinivas Akella, John T. Wen