331 search results - page 32 / 67 » A framework for selective query expansion |
VLDB
2009
ACM
14 years 8 months ago
2009
ACM
In this paper, we study the problem of continuous monitoring of reverse k nearest neighbor queries. Existing continuous reverse nearest neighbor monitoring techniques are sensitive...
ICDE
2007
IEEE
14 years 3 months ago
2007
IEEE
This paper introduces COLT (Continuous On-Line Tuning), a novel framework that continuously monitors the workload of a database system and enriches the existing physical design wi...
EDBT
2009
ACM
14 years 3 months ago
2009
ACM
Materialized views (MV) can significantly improve the query performance of relational databases. In this paper, we consider MVs to optimize complex scenarios where many heterogen...
SIGIR
2003
ACM
14 years 1 months ago
2003
ACM
In a federated digital library system, it is too expensive to query every accessible library. Resource selection is the task to decide to which libraries a query should be routed....
SAMT
2007
Springer
14 years 2 months ago
2007
Springer
Performing simple keyword-based search has long been the only way to access information. But for a truly comprehensive search on multimedia data, this approach is no longer su cien...