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» Complexity of the Cover Polynomial
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WWW
2004
ACM
16 years 1 months ago
Semantic email
This paper investigates how the vision of the Semantic Web can be carried over to the realm of email. We introduce a general notion of semantic email, in which an email message co...
Luke McDowell, Oren Etzioni, Alon Y. Halevy, Henry...
STOC
2009
ACM
133views Algorithms» more  STOC 2009»
16 years 1 months ago
New direct-product testers and 2-query PCPs
The "direct product code" of a function f gives its values on all k-tuples (f(x1), . . . , f(xk)). This basic construct underlies "hardness amplification" in c...
Russell Impagliazzo, Valentine Kabanets, Avi Wigde...
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STOC
2001
ACM
123views Algorithms» more  STOC 2001»
16 years 29 days ago
On optimal slicing of parallel programs
Optimal program slicing determines for a statement S in a program whether or not S affects a specified set of statements, given that all conditionals in are interpreted as non-d...
Markus Müller-Olm, Helmut Seidl
PODS
2007
ACM
159views Database» more  PODS 2007»
16 years 24 days ago
Generalized hypertree decompositions: np-hardness and tractable variants
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
Georg Gottlob, Thomas Schwentick, Zoltán Mi...
APPROX
2009
Springer
112views Algorithms» more  APPROX 2009»
15 years 7 months ago
Deterministic Approximation Algorithms for the Nearest Codeword Problem
The Nearest Codeword Problem (NCP) is a basic algorithmic question in the theory of error-correcting codes. Given a point v ∈ Fn 2 and a linear space L ⊆ Fn 2 of dimension k NC...
Noga Alon, Rina Panigrahy, Sergey Yekhanin