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APPROX
2010
Springer
120views Algorithms» more  APPROX 2010»
15 years 1 months ago
Uniform Derandomization from Pathetic Lower Bounds
A recurring theme in the literature on derandomization is that probabilistic algorithms can be simulated quickly by deterministic algorithms, if one can obtain impressive (i.e., s...
Eric Allender, Vikraman Arvind, Fengming Wang
ACL
2010
14 years 9 months ago
Viterbi Training for PCFGs: Hardness Results and Competitiveness of Uniform Initialization
We consider the search for a maximum likelihood assignment of hidden derivations and grammar weights for a probabilistic context-free grammar, the problem approximately solved by ...
Shay B. Cohen, Noah A. Smith
ICALP
2010
Springer
15 years 4 months ago
On the Inapproximability of Vertex Cover on k-Partite k-Uniform Hypergraphs
Computing a minimum vertex cover in graphs and hypergraphs is a well-studied optimizaton problem. While intractable in general, it is well known that on bipartite graphs, vertex c...
Venkatesan Guruswami, Rishi Saket
ECRTS
2005
IEEE
15 years 5 months ago
Task Assignment on Uniform Heterogeneous Multiprocessors
The partitioning of periodic task systems upon uniform multiprocessors is considered. In the partitioned approach to scheduling periodic tasks upon multiprocessors, each task is a...
Shelby Funk, Sanjoy K. Baruah
IPPS
2007
IEEE
15 years 5 months ago
A Resource Allocation Problem in Replicated Peer-to-Peer Storage Systems
This paper focuses on peer-to-peer storage systems that achieve availability through replication. We study the problem of resource allocation when the system must replicate multip...
Sriram Ramabhadran, Joseph Pasquale