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165
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ICALP
2009
Springer
16 years 5 months ago
2009
Springer
We present a randomized subexponential time, polynomial space parameterized algorithm for the k-Weighted Feedback Arc Set in Tournaments (k-FAST) problem. We also show that our alg...
152
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ICALP
2009
Springer
16 years 5 months ago
2009
Springer
Negation-limited circuits have been studied as a circuit model between general circuits and monotone circuits. In this paper, we consider limiting negations in formulas. The minimu...
156
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ICALP
2009
Springer
16 years 5 months ago
2009
Springer
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
142
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ICALP
2009
Springer
16 years 5 months ago
2009
Springer
We present a range of new results for testing properties of Boolean functions that are defined in terms of the Fourier spectrum. Broadly speaking, our results show that the propert...
171
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ICALP
2009
Springer
16 years 5 months ago
2009
Springer
Estimating frequency moments and Lp distances are well studied problems in the adversarial data stream model and tight space bounds are known for these two problems. There has been...