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ESA
2008
Springer
134views Algorithms» more  ESA 2008»
15 years 8 months ago
A Near-Tight Bound for the Online Steiner Tree Problem in Graphs of Bounded Asymmetry
The edge asymmetry of a directed, edge-weighted graph is defined as the maximum ratio of the weight of antiparallel edges in the graph, and can be used as a measure of the heterog...
Spyros Angelopoulos
COCO
2009
Springer
119views Algorithms» more  COCO 2009»
16 years 1 months ago
An Approximation Algorithm for Approximation Rank
One of the strongest techniques available for showing lower bounds on quantum communication complexity is the logarithm of the approximation rank of the communication matrix— th...
Troy Lee, Adi Shraibman
FCT
2005
Springer
15 years 12 months ago
On the Black-Box Complexity of Sperner's Lemma
We present several results on the complexity of various forms of Sperner’s Lemma in the black-box model of computing. We give a deterministic algorithm for Sperner problems over ...
Katalin Friedl, Gábor Ivanyos, Miklos Santh...
CORR
2010
Springer
138views Education» more  CORR 2010»
15 years 6 months ago
Shallow Circuits with High-Powered Inputs
A polynomial identity testing algorithm must determine whether an input polynomial (given for instance by an arithmetic circuit) is identically equal to 0. In this paper, we show ...
Pascal Koiran
EUSFLAT
2007
154views Fuzzy Logic» more  EUSFLAT 2007»
15 years 7 months ago
Bounds for Value at Risk for Asymptotically Dependent Assets - the Copula Approach
The theory of copulas provides a useful tool for modeling dependence in risk management. In insurance and finance, as well as in other applications, dependence of extreme events ...
Piotr Jaworski