578 search results - page 5 / 116 » The Importance of Aggregation |
ECIR
2003
Springer
13 years 11 months ago
2003
Springer
In this paper we present an initial study on the use of both high and low level MPEG-7 descriptions for video retrieval. A brief survey of current XML indexing techniques shows tha...
EUC
2006
Springer
14 years 1 months ago
2006
Springer
In most wireless sensor networks, applications submit their requests as queries and wireless sensor network transmits the requested data to the applications. However, most existing...
IPPS
2007
IEEE
14 years 4 months ago
2007
IEEE
— An important class of queries over sensor networks are network-wide aggregation queries. In this work we study a class of aggregation queries which we refer to as aggregate thr...
WMCSA
2002
IEEE
14 years 2 months ago
2002
IEEE
We show how the database community’s notion of a generic query interface for data aggregation can be applied to ad-hoc networks of sensor devices. As has been noted in the senso...
FCS
2006
13 years 11 months ago
2006
We prove an upper bound on the convergence rate of Markov Chain Monte Carlo (MCMC) algorithms for the important special case when the state space can be aggregated into a smaller ...