Sciweavers

4131 search results - page 505 / 827
» The Generalized Max-Controlled Set Problem
Sort
View
FOCS
2002
IEEE
16 years 6 days ago
Protocols and Impossibility Results for Gossip-Based Communication Mechanisms
In recent years, gossip-based algorithms have gained prominence as a methodology for designing robust and scalable communication schemes in large distributed systems. The premise ...
David Kempe, Jon M. Kleinberg
PODC
1999
ACM
15 years 11 months ago
Optimal, Distributed Decision-Making: The Case of no Communication
We present a combinatorial framework for the study of a natural class of distributed optimization problems that involve decisionmaking by a collection of n distributed agents in th...
Marios Mavronicolas, Paul G. Spirakis
DBPL
1995
Springer
106views Database» more  DBPL 1995»
15 years 10 months ago
On Impossibility of Decremental Recomputation of Recursive Queries in Relational Calculus and SQL
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...
Guozhu Dong, Leonid Libkin, Limsoon Wong
DLOG
2008
15 years 9 months ago
Taming the Infinite Chase: Query Answering under Expressive Relational Constraints
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
Andrea Calì, Georg Gottlob, Michael Kifer
ICC
2007
IEEE
113views Communications» more  ICC 2007»
16 years 1 months ago
Utility-Aware Resource Allocation for Multi-Stream Overlay Multicast
Abstract - Overlay multicast, which performs topology construction and data relaying in the application layer, has recently emerged as a promising vehicle for data distribution. In...
Ji Xu, Jiangchuan Liu, Hsiao-Hwa Chen, Xiao Chu