829 search results - page 30 / 166 » Location-aware Query Processing and Optimization |
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
Text documents often embed data that is structured in nature. This structured data is increasingly exposed using information extraction systems, which generate structured relation...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
Many systems such as Tukwila and YFilter combine automaton and algebra techniques to process queries over tokenized XML streams. Typically in this architecture, an automaton is fi...
DMSN
2006
ACM
14 years 1 months ago
2006
ACM
In this paper, we study the problem of processing multiple queries in a wireless sensor network. We focus on multiquery optimization at the base station level to minimize the numb...
SIGMOD
2005
ACM
14 years 1 months ago
2005
ACM
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
Top-k processing in uncertain databases is semantically and computationally different from traditional top-k processing. The interplay between score and uncertainty makes traditio...