574 search results - page 109 / 115 » Distributed Queries and Query Optimization in Schema-Based P... |
VLDB
2007
ACM
14 years 7 months ago
2007
ACM
Estimating the cardinality (i.e. number of distinct elements) of an arbitrary set expression defined over multiple distributed streams is one of the most fundamental queries of in...
MONET
2007
13 years 7 months ago
2007
— This paper proposes a service discovery protocol for sensor networks that is specifically tailored for use in humancentered pervasive environments. It uses the high-level conc...
DEBU
2010
13 years 5 months ago
2010
Panda (for Provenance and Data) is a new project whose goal is to develop a general-purpose system that unifies concepts from existing provenance systems and overcomes some limita...
IPPS
2009
IEEE
14 years 2 months ago
2009
IEEE
In this paper, we explore the problem of mapping filtering services on large-scale heterogeneous platforms. Two important optimization criteria should be considered in such a fra...
PODC
2010
ACM
13 years 11 months ago
2010
ACM
A token is hidden in one of several boxes and then the boxes are locked. The probability of placing the token in each of the boxes is known. A searcher is looking for the token by...