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112
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SIAMCOMP
2008
101views more  SIAMCOMP 2008»
15 years 1 months ago
Combination Can Be Hard: Approximability of the Unique Coverage Problem
We prove semi-logarithmic inapproximability for a maximization problem called unique coverage: given a collection of sets, find a subcollection that maximizes the number of elemen...
Erik D. Demaine, Uriel Feige, MohammadTaghi Hajiag...
71
Voted
CORR
2010
Springer
71views Education» more  CORR 2010»
14 years 11 months ago
Distributed Verification and Hardness of Distributed Approximation
Atish Das Sarma, Stephan Holzer, Liah Kor, Amos Ko...
COCO
2005
Springer
123views Algorithms» more  COCO 2005»
15 years 7 months ago
If NP Languages are Hard on the Worst-Case Then It is Easy to Find Their Hard Instances
We prove that if NP ⊆ BPP, i.e., if SAT is worst-case hard, then for every probabilistic polynomial-time algorithm trying to decide SAT, there exists some polynomially samplable ...
Dan Gutfreund, Ronen Shaltiel, Amnon Ta-Shma
CC
2007
Springer
121views System Software» more  CC 2007»
15 years 1 months ago
If NP Languages are Hard on the Worst-Case, Then it is Easy to Find Their Hard Instances
We prove that if NP ⊆ BPP, i.e., if SAT is worst-case hard, then for every probabilistic polynomial-time algorithm trying to decide SAT, there exists some polynomially samplable ...
Dan Gutfreund, Ronen Shaltiel, Amnon Ta-Shma