305 search results - page 35 / 61 » Including Group-By in Query Optimization |
SIGMOD
2009
ACM
14 years 8 months ago
2009
ACM
With the proliferation of the RDF data format, engines for RDF query processing are faced with very large graphs that contain hundreds of millions of RDF triples. This paper addre...
HPCS
2006
IEEE
14 years 1 months ago
2006
IEEE
This paper presents collaborative agents system architecture approach for data dissemination in a wireless sensor network (WSN). This system architecture consists of four layers o...
SEBD
2003
13 years 9 months ago
2003
The Ambient Logic is a modal logic proposed to describe the structural and computational properties of distributed and mobile computations. The static part of the Ambient Logic is,...
ALT
2009
Springer
14 years 4 months ago
2009
Springer
Abstract. We analyze the expected cost of a greedy active learning algorithm. Our analysis extends previous work to a more general setting in which different queries have differe...
PVLDB
2008
13 years 7 months ago
2008
Several real-world applications need to effectively manage and reason about large amounts of data that are inherently uncertain. For instance, pervasive computing applications mus...