158 search results - page 16 / 32 » Approximate Range Mode and Range Median Queries |
ICDE
2006
IEEE
14 years 8 months ago
2006
IEEE
We consider the problem of creating a sample view of a database table. A sample view is an indexed, materialized view that permits efficient sampling from an arbitrary range query...
SECON
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract— Most existing work in aggregation and querying for sensor network data has focused on the use of standard statistical operations (average, median, etc) to reduce the qu...
SSD
2005
Springer
14 years 6 days ago
2005
Springer
Abstract. Many new applications involving moving objects require the collection and querying of trajectory data, so efficient indexing methods are needed to support complex spatio...
ICDE
2002
IEEE
14 years 8 months ago
2002
IEEE
XML and other semi-structured data may have partially specified or missing schema information, motivating the use of a structural summary which can be automatically computed from ...
W2GIS
2009
Springer
14 years 1 months ago
2009
Springer
Abstract. A review is provided of some database and representation issues involved in the implementation of geographic information systems (GIS). The increasing popularity of web-b...