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COCO
2009
Springer
106views Algorithms» more  COCO 2009»
13 years 11 months 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
COCO
2009
Springer
96views Algorithms» more  COCO 2009»
13 years 11 months ago
Poly-logarithmic Independence Fools AC0 Circuits
We prove that poly-sized AC0 circuits cannot distinguish a poly-logarithmically independent distribution from the uniform one. This settles the 1990 conjecture by Linial and Nisan...
Mark Braverman
COCO
2009
Springer
78views Algorithms» more  COCO 2009»
13 years 11 months ago
Fixed-Polynomial Size Circuit Bounds
—In 1982, Kannan showed that ΣP 2 does not have nk -sized circuits for any k. Do smaller classes also admit such circuit lower bounds? Despite several improvements of Kannan’s...
Lance Fortnow, Rahul Santhanam, Ryan Williams
COCO
2009
Springer
124views Algorithms» more  COCO 2009»
13 years 11 months ago
The Maximum Communication Complexity of Multi-Party Pointer Jumping
—We study the one-way number-on-the-forhead (NOF) communication complexity of the k-layer pointer jumping problem. Strong lower bounds for this problem would have important impli...
Joshua Brody
COCO
2009
Springer
96views Algorithms» more  COCO 2009»
13 years 11 months ago
Reconstruction of Generalized Depth-3 Arithmetic Circuits with Bounded Top Fan-in
In this paper we give reconstruction algorithms for depth-3 arithmetic circuits with k multiplication gates (also known as ΣΠΣ(k) circuits), where k = O(1). Namely, we give an ...
Zohar Shay Karnin, Amir Shpilka
COCO
2009
Springer
121views Algorithms» more  COCO 2009»
13 years 11 months ago
Lower Bounds on Quantum Multiparty Communication Complexity
A major open question in communication complexity is if randomized and quantum communication are polynomially related for all total functions. So far, no gap larger than a power o...
Troy Lee, Gideon Schechtman, Adi Shraibman
COCO
2009
Springer
131views Algorithms» more  COCO 2009»
13 years 11 months ago
A Multi-Round Communication Lower Bound for Gap Hamming and Some Consequences
—The Gap-Hamming-Distance problem arose in the context of proving space lower bounds for a number of key problems in the data stream model. In this problem, Alice and Bob have to...
Joshua Brody, Amit Chakrabarti
COCO
2009
Springer
113views Algorithms» more  COCO 2009»
13 years 11 months ago
Are PCPs Inherent in Efficient Arguments?
Starting with Kilian (STOC ‘92), several works have shown how to use probabilistically checkable proofs (PCPs) and cryptographic primitives such as collision-resistant hashing to...
Guy N. Rothblum, Salil P. Vadhan
COCO
2009
Springer
75views Algorithms» more  COCO 2009»
13 years 11 months ago
Worst-Case Running Times for Average-Case Algorithms
Luis Filipe Coelho Antunes, Lance Fortnow