Sciweavers

9 search results - page 2 / 2
» Improved Separations between Nondeterministic and Randomized...
Sort
View
AFRICACRYPT
2010
Springer
14 years 7 days ago
Flexible Group Key Exchange with On-demand Computation of Subgroup Keys
Modern multi-user communication systems, including popular instant messaging tools, social network platforms, and cooperative-work applications, offer flexible forms of communica...
Michel Abdalla, Céline Chevalier, Mark Manu...
FOCS
2007
IEEE
13 years 9 months ago
Discrepancy and the Power of Bottom Fan-in in Depth-three Circuits
We develop a new technique of proving lower bounds for the randomized communication complexity of boolean functions in the multiparty `Number on the Forehead' model. Our meth...
Arkadev Chattopadhyay
ADC
2007
Springer
145views Database» more  ADC 2007»
13 years 12 months ago
The Privacy of k-NN Retrieval for Horizontal Partitioned Data -- New Methods and Applications
Recently, privacy issues have become important in clustering analysis, especially when data is horizontally partitioned over several parties. Associative queries are the core retr...
Artak Amirbekyan, Vladimir Estivill-Castro
INFOCOM
2008
IEEE
14 years 5 days ago
Wireless Medium Access via Adaptive Backoff: Delay and Loss Minimization
— We consider packet transmission scheduling at the MAC-layer via adaptive backoff algorithms that are favorable in terms of queue occupancies in a wireless network. General netw...
Gardar Hauksson, Murat Alanyali