540 search results - page 43 / 108 » Continuous Queries over Data Streams |
VLDB
2005
ACM
14 years 1 months ago
2005
ACM
We study XML stream-specific schema-based optimization. We assume a widely-adopted automata-based execution model for XQuery evaluation. Criteria are established regarding what s...
PODS
2006
ACM
14 years 7 months ago
2006
ACM
Skew is prevalent in data streams, and should be taken into account by algorithms that analyze the data. The problem of finding "biased quantiles"-- that is, approximate...
DAWAK
2008
Springer
13 years 9 months ago
2008
Springer
Abstract. We investigate the problem of finding frequent patterns in a continuous stream of transactions. It is recognized that the approximate solutions are usually sufficient and...
EDBTW
2006
Springer
13 years 11 months ago
2006
Springer
Geospatial image data obtained by satellites and aircraft are increasingly important to a wide range of applications, such as disaster management, climatology, and environmental m...
ICDE
2012
IEEE
11 years 10 months ago
2012
IEEE
—On a stream of two dimensional data items (x, y) where x is an item identifier, and y is a numerical attribute, a correlated aggregate query requires us to first apply a selec...