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COCOON
2006
Springer
14 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...
ICALP
2011
Springer
13 years 1 months ago
Improved Approximation for the Directed Spanner Problem
We present an O( √ n log n)-approximation algorithm for the problem of finding the sparsest spanner of a given directed graph G on n vertices. A spanner of a graph is a sparse ...
Piotr Berman, Arnab Bhattacharyya, Konstantin Maka...
CORR
2011
Springer
143views Education» more  CORR 2011»
13 years 1 months ago
Towards Understanding and Harnessing the Potential of Clause Learning
Efficient implementations of DPLL with the addition of clause learning are the fastest complete Boolean satisfiability solvers and can handle many significant real-world problem...
Paul Beame, Henry A. Kautz, Ashish Sabharwal
CORR
2006
Springer
97views Education» more  CORR 2006»
13 years 10 months ago
Improved Nearly-MDS Expander Codes
A construction of expander codes is presented with the following three properties: (i) the codes lie close to the Singleton bound, (ii) they can be encoded in time complexity that ...
Ron M. Roth, Vitaly Skachek
IPPS
1998
IEEE
14 years 2 months ago
An Improved Output-Size Sensitive Parallel Algorithm for Hidden-Surface Removal for Terrains
We describe an efficient parallel algorithm for hiddensurface removal for terrain maps. The algorithm runs in Olog4 n steps on the CREW PRAM model with a work bound of On + kpolyl...
Neelima Gupta, Sandeep Sen