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2009
IEEE
16 years 21 days ago
Expressiveness and Closure Properties for Quantitative Languages
Weighted automata are nondeterministic automata with numerical weights on transitions. They can define quantitative languages L that assign to each word w a real number L(w). In ...
Krishnendu Chatterjee, Laurent Doyen, Thomas A. He...
ATAL
2009
Springer
16 years 19 days ago
Combinatorial prediction markets for event hierarchies
We study combinatorial prediction markets where agents bet on the sum of values at any tree node in a hierarchy of events, for example the sum of page views among all the children...
Mingyu Guo, David M. Pennock
COCO
2009
Springer
105views Algorithms» more  COCO 2009»
16 years 19 days ago
Planar Graph Isomorphism is in Log-Space
Graph Isomorphism is the prime example of a computational problem with a wide difference between the best known lower and upper bounds on its complexity. There is a significant ...
Samir Datta, Nutan Limaye, Prajakta Nimbhorkar, Th...
COCO
2009
Springer
117views Algorithms» more  COCO 2009»
16 years 19 days ago
The Proof Complexity of Polynomial Identities
Devising an efficient deterministic – or even a nondeterministic sub-exponential time – algorithm for testing polynomial identities is a fundamental problem in algebraic comp...
Pavel Hrubes, Iddo Tzameret
COCO
2009
Springer
106views Algorithms» more  COCO 2009»
16 years 19 days ago
Improved Approximation of Linear Threshold Functions
We prove two main results on how arbitrary linear threshold functions f(x) = sign(w · x − θ) over the n-dimensional Boolean hypercube can be approximated by simple threshold f...
Ilias Diakonikolas, Rocco A. Servedio
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