6974 search results - page 174 / 1395 » Querying Semi-Structured Data |
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
When querying a temporal database, a user often makes certain semantic assumptions on stored temporal data. This paper formalizes and studies two types of semantic assumptions: po...
SIGKDD
2008
13 years 8 months ago
2008
Advances in telecommunications and GPS sensors technology have made possible the collection of data like time series of locations, related to the movement of individuals. The anal...
DAWAK
2006
Springer
13 years 12 months ago
2006
Springer
We consider the problem of concurrent execution of multiple frequent itemset queries. If such data mining queries operate on overlapping parts of the database, then their overall I...
JACM
2012
11 years 10 months ago
2012
A fundamental problem in data management is to draw and maintain a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With la...
ECOI
2011
13 years 2 months ago
2011
The potential for physical flora collections to support scientific research is being enhanced by rapid development of digital databases that represent characteristics of the physic...