14248 search results - page 8 / 2850 » Queries |
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
For complex data mining queries, query optimization issues arise, similar to those for the traditional database queries. However, few works have applied the cost-based query optim...
ICEBE
2005
IEEE
14 years 1 months ago
2005
IEEE
Over a traditional Database Management System (DBMS), the answer to an aggregate query is usually much smaller than the answer to a similar nonaggregate query. Therefore, we call ...
SIGIR
2010
ACM
13 years 7 months ago
2010
ACM
Query reformulation techniques based on query logs have recently proven to be effective for web queries. However, when initial queries have reasonably good quality, these techniqu...
ICDM
2002
IEEE
14 years 15 days ago
2002
IEEE
Previous works on automatic query clustering most generate a flat, un-nested partition of query terms. In this work, we are pursuing to organize query terms into a hierarchical s...
ICDE
2008
IEEE
14 years 9 months ago
2008
IEEE
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 perf...