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ECCC
2007
86views more  ECCC 2007»
13 years 7 months ago
On Parameterized Approximability
Abstract. Combining classical approximability questions with parameterized complexity, we introduce a theory of parameterized approximability. The main intention of this theory is ...
Yijia Chen, Martin Grohe, Magdalena Grüber
ECCC
2000
86views more  ECCC 2000»
13 years 7 months ago
Neural Systems as Nonlinear Filters
Experimental data show that biological synapses behave quite differently from the symbolic synapses in all common artificialneuralnetwork models. Biological synapses are dynamic, ...
Wolfgang Maass, Eduardo D. Sontag
ECCC
2000
179views more  ECCC 2000»
13 years 7 months ago
A Note on Approximating MAX-BISECTION on Regular Graphs
We design a 0:795 approximation algorithm for the Max-Bisection problem restricted to regular graphs. In the case of three regular graphs our results imply an approximation ratio ...
Uriel Feige, Marek Karpinski, Michael Langberg
ECCC
2002
74views more  ECCC 2002»
13 years 7 months ago
On the proper learning of axis parallel concepts
We study the proper learnability of axis-parallel concept classes in the PAC-learning and exactlearning models. These classes include union of boxes, DNF, decision trees and multi...
Nader H. Bshouty, Lynn Burroughs
ECCC
2002
44views more  ECCC 2002»
13 years 7 months ago
The GGM Construction does NOT yield Correlation Intractable Function Ensembles
Abstract. We consider the function ensembles emerging from the construction of Goldreich, Goldwasser and Micali (GGM), when applied to an arbitrary pseudoramdon generator. We show ...
Oded Goldreich