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» Efficient computation of the characteristic polynomial
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ICDT
2009
ACM
149views Database» more  ICDT 2009»
14 years 8 months ago
Query languages for data exchange: beyond unions of conjunctive queries
The class of unions of conjunctive queries (UCQ) has been shown to be particularly well-behaved for data exchange; its certain answers can be computed in polynomial time (in terms...
Juan Reutter, Marcelo Arenas, Pablo Barceló
SWAT
1998
Springer
108views Algorithms» more  SWAT 1998»
13 years 12 months ago
Formal Language Constrained Path Problems
Given an alphabet , a (directed) graph G whose edges are weighted and -labeled, and a formal language L , the formal-language-constrained shortest/simple path problem consists of ...
Christopher L. Barrett, Riko Jacob, Madhav V. Mara...
IJHPCA
2006
125views more  IJHPCA 2006»
13 years 7 months ago
Complexity Results for Collective Communications on Heterogeneous Platforms
In this paper, we consider the communications involved in the execution of a complex application, deployed on a heterogeneous platform. Such applications extensively use macro-com...
Olivier Beaumont, Loris Marchal, Yves Robert
WINE
2010
Springer
153views Economy» more  WINE 2010»
13 years 5 months ago
Approximation Schemes for Sequential Posted Pricing in Multi-unit Auctions
We design algorithms for computing approximately revenue-maximizing sequential postedpricing mechanisms (SPM) in K-unit auctions, in a standard Bayesian model. A seller has K copi...
Tanmoy Chakraborty, Eyal Even-Dar, Sudipto Guha, Y...
DCC
2002
IEEE
14 years 7 months ago
Itoh-Tsujii Inversion in Standard Basis and Its Application in Cryptography and Codes
This contribution is concerned with a generalization of Itoh and Tsujii's algorithm for inversion in extension fields GF(qm ). Unlike the original algorithm, the method introd...
Jorge Guajardo, Christof Paar