829 search results - page 44 / 166 » Location-aware Query Processing and Optimization |
CIKM
2008
Springer
13 years 10 months ago
2008
Springer
The typical workload in a database system consists of a mixture of multiple queries of different types, running concurrently and interacting with each other. Hence, optimizing per...
SSD
2007
Springer
14 years 2 months ago
2007
Springer
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
CICLING
2005
Springer
14 years 2 months ago
2005
Springer
Abstract. With the current method of query formation, a Question Answering system retrieves a set of documents that are similar to a question, while what is mostly required is a se...
SIGIR
2011
ACM
12 years 11 months ago
2011
ACM
Large search engines process thousands of queries per second over billions of documents, making query processing a major performance bottleneck. An important class of optimization...
SIGMOD
2011
ACM
12 years 11 months ago
2011
ACM
In this paper we consider the problem of answering queries using views, which is important for data integration, query optimization, and data warehouses. We consider its simplest ...