511 search results - page 6 / 103 » Approximate Selection Queries over Imprecise Data |
DLOG
2007
13 years 11 months ago
2007
Abstract. Fuzzy Description Logics (f-DLs) have been proposed as formalisms capable of capturing and reasoning about imprecise and vague knowledge. The last years, research in Desc...
DEXA
2008
Springer
13 years 10 months ago
2008
Springer
In this research, we propose to use the discrete cosine transform to approximate the cumulative distributions of data cube cells' values. The cosine transform is known to have...
ICDE
2006
IEEE
14 years 10 months ago
2006
IEEE
Aggregate monitoring over data streams is attracting more and more attention in research community due to its broad potential applications. Existing methods suffer two problems, 1...
ICMCS
2005
IEEE
14 years 2 months ago
2005
IEEE
This paper introduces a new approach of approximating the selectivity of multimedia range queries. Estimating the selectivity of a range query is a pre-requisite to optimize a mul...
GIS
2006
ACM
14 years 9 months ago
2006
ACM
Location information gathered from a variety of sources in the form of sensor data, video streams, human observations, and so on, is often imprecise and uncertain and needs to be ...