Sciweavers

133 search results - page 17 / 27
» Lower Bounds on the Randomized Communication Complexity of R...
Sort
View
ICALP
2005
Springer
14 years 2 months ago
Computational Bounds on Hierarchical Data Processing with Applications to Information Security
Motivated by the study of algorithmic problems in the domain of information security, in this paper, we study the complexity of a new class of computations over a collection of va...
Roberto Tamassia, Nikos Triandopoulos
FOCS
2007
IEEE
14 years 2 months ago
On the Hardness and Smoothed Complexity of Quasi-Concave Minimization
In this paper, we resolve the smoothed and approximative complexity of low-rank quasi-concave minimization, providing both upper and lower bounds. As an upper bound, we provide th...
Jonathan A. Kelner, Evdokia Nikolova
CORR
2011
Springer
200views Education» more  CORR 2011»
13 years 3 months ago
Beating the Gilbert-Varshamov Bound for Online Channels
In the online channel coding model, a sender wishes to communicate a message to a receiver by transmitting a codeword x = (x1, . . . , xn) ∈ {0, 1}n bit by bit via a channel lim...
Ishay Haviv, Michael Langberg
SIGECOM
2010
ACM
164views ECommerce» more  SIGECOM 2010»
14 years 1 months ago
Truthful mechanisms with implicit payment computation
It is widely believed that computing payments needed to induce truthful bidding is somehow harder than simply computing the allocation. We show that the opposite is true for singl...
Moshe Babaioff, Robert D. Kleinberg, Aleksandrs Sl...
FOCS
2004
IEEE
14 years 9 days ago
Shuffling by Semi-Random Transpositions
In the cyclic-to-random shuffle, we are given n cards arranged in a circle. At step k, we exchange the k'th card along the circle with a uniformly chosen random card. The pro...
Elchanan Mossel, Yuval Peres, Alistair Sinclair