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PODS
2007
ACM
14 years 11 months ago
2007
ACM
The generalized hypertree width GHW(H) of a hypergraph H is a measure of its cyclicity. Classes of conjunctive queries or constraint satisfaction problems whose associated hypergr...
CDC
2009
IEEE
14 years 3 months ago
2009
IEEE
— We consider the problem of determining the existence of known constant signals over a set of sites, given noisy measurements obtained by a team of active sensors that can switc...
AI
1998
Springer
13 years 10 months ago
1998
Springer
This paper addresses the logical foundations of goal-regression planning in autonomous rational agents. It focuses mainly on three problems. The first is that goals and subgoals w...
WISEC
2009
ACM
14 years 5 months ago
2009
ACM
Time synchronization in highly distributed wireless systems like sensor and ad hoc networks is extremely important in order to maintain a consistent notion of time throughout the ...
ICS
2005
Tsinghua U.
14 years 4 months ago
2005
Tsinghua U.
The Replica Placement Problem (RPP) aims at creating a set of duplicated data objects across the nodes of a distributed system in order to optimize certain criteria. Typically, RP...