6004 search results - page 200 / 1201 » Parallelizing query optimization |
ICDCS
2005
IEEE
14 years 4 months ago
2005
IEEE
This paper presents MobiQuery, a spatiotemporal query service that allows mobile users to periodically gather information from their surrounding areas through a wireless sensor ne...
PDIS
1996
IEEE
14 years 2 months ago
1996
IEEE
Users today are struggling to integrate a broad range of information sources providing di erent levels of query capabilities. Currently, data sources with di erent and limitedcapa...
AIIA
2007
Springer
14 years 4 months ago
2007
Springer
In this paper we compare four selection strategies in evolutionary optimization of information retrieval (IR) in a question answering setting. The IR index has been augmented by li...
ICWS
2009
IEEE
13 years 8 months ago
2009
IEEE
DHTs are scalable, self-organizing, and adaptive to underlying topology changes, thus being a promising infrastructure for realizing efficient Web service discovery. Range queries...
SIGMOD
2004
ACM
14 years 10 months ago
2004
ACM
We present the Priority R-tree, or PR-tree, which is the first R-tree variant that always answers a window query using O((N/B)1-1/d + T/B) I/Os, where N is the number of ddimensio...