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STOC
2005
ACM
15 years 10 months ago
2005
ACM
We continue the study of amplification of average-case complexity within NP, and we focus on the uniform case. We prove that if every problem in NP admits an efficient uniform alg...
STOC
2005
ACM
15 years 10 months ago
2005
ACM
In this paper, we study the problem of learning phylogenies and hidden Markov models. We call the Markov model nonsingular if all transtion matrices have determinants bounded away...
STOC
2005
ACM
15 years 10 months ago
2005
ACM
Computing the unit group and class group of a number field are two of the main tasks in computational algebraic number theory. Factoring integers reduces to solving Pell's eq...
STOC
2005
ACM
15 years 10 months ago
2005
ACM
We consider the price of anarchy of pure Nash equilibria in congestion games with linear latency functions. For asymmetric games, the price of anarchy of maximum social cost is ( ...
STOC
2005
ACM
15 years 10 months ago
2005
ACM
In this work we study two, seemingly unrelated, notions. Locally Decodable Codes (LDCs) are codes that allow the recovery of each message bit from a constant number of entries of ...