750 search results - page 29 / 150 » Aggregates in Possibilistic Databases |
ICDE
2008
IEEE
14 years 8 months ago
2008
IEEE
In a massive stream of sequential events such as stock feeds, sensor readings, or IP traffic measurements, tuples pertaining to recent events are typically more important than olde...
ICDE
2006
IEEE
14 years 8 months ago
2006
IEEE
In this paper, we introduce a new class of data mining problems called learning from aggregate views. In contrast to the traditional problem of learning from a single table of tra...
ICDE
2001
IEEE
14 years 8 months ago
2001
IEEE
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...
ICDE
2009
IEEE
14 years 8 months ago
2009
IEEE
Materializing results from complex aggregation queries helps to significantly improve response times in OLAP servers. This problem is known as the view selection problem: choosing ...
SSDBM
2009
IEEE
14 years 1 months ago
2009
IEEE
Abstract. We propose an original solution for the general reverse k-nearest neighbor (RkNN) search problem in Euclidean spaces. Compared to the limitations of existing methods for ...