491 search results - page 14 / 99 » Optimizing Large OODB Queries |
SIGIR
2011
ACM
12 years 10 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...
ICDE
2000
IEEE
14 years 3 days ago
2000
IEEE
We consider an architecture of mediators and wrappers for Internet accessible WebSources of limited query capability. Each call to a source is a WebSource Implementation (WSI) and...
PVLDB
2008
13 years 7 months ago
2008
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...
SEMWEB
2009
Springer
14 years 7 days ago
2009
Springer
Scalable query answering over Description Logic (DL) based ontologies plays an important role for the success of the Semantic Web. Towards tackling the scalability problem, we prop...
VLDB
1994
ACM
13 years 11 months ago
1994
ACM
A new type of optimization, called predicate move-around, ia introduced. It is shown how this optimization `considerably improvea the efficiency of evaluating SQL queries that hav...