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STOC
2005
ACM
135views Algorithms» more  STOC 2005»
14 years 7 months ago
Hardness of the undirected congestion minimization problem
We show that there is no log log M log log log M -approximation for the undirected congestion minimization problem unless NP ZPTIME(npolylog n ), where M is the size of the grap...
Matthew Andrews, Lisa Zhang
DATE
2006
IEEE
110views Hardware» more  DATE 2006»
14 years 1 months ago
Multiprocessor synthesis for periodic hard real-time tasks under a given energy constraint
The energy-aware design for electronic systems has been an important issue in hardware and/or software implementations, especially for embedded systems. This paper targets a synth...
Heng-Ruey Hsu, Jian-Jia Chen, Tei-Wei Kuo
ECCC
2007
86views more  ECCC 2007»
13 years 7 months ago
On Parameterized Approximability
Abstract. Combining classical approximability questions with parameterized complexity, we introduce a theory of parameterized approximability. The main intention of this theory is ...
Yijia Chen, Martin Grohe, Magdalena Grüber
CORR
2012
Springer
218views Education» more  CORR 2012»
12 years 3 months ago
On the Hardness of Welfare Maximization in Combinatorial Auctions with Submodular Valuations
We present a new type of monotone submodular functions: multi-peak submodular functions. Roughly speaking, given a family of sets F, we construct a monotone submodular function f ...
Shahar Dobzinski, Jan Vondrák
CORR
2008
Springer
106views Education» more  CORR 2008»
13 years 7 months ago
Quantization of Prior Probabilities for Hypothesis Testing
Abstract--In this paper, Bayesian hypothesis testing is investigated when the prior probabilities of the hypotheses, taken as a random vector, are quantized. Nearest neighbor and c...
Kush R. Varshney, Lav R. Varshney