452 search results - page 74 / 91 » Updating relational data via SPARQL update |
PODS
2009
ACM
14 years 10 months ago
2009
ACM
Let be a finite, ordered alphabet, and consider a string x = x1x2 . . . xn n . A secondary index for x answers alphabet range queries of the form: Given a range [al, ar] , retu...
VLDB
2004
ACM
14 years 3 months ago
2004
ACM
In data stream applications, data arrive continuously and can only be scanned once as the query processor has very limited memory (relative to the size of the stream) to work with...
ICDE
2010
IEEE
14 years 9 months ago
2010
IEEE
Scientific workflows are increasingly used for rapid integration of existing algorithms to form larger and more comgrams. Such workflows promise to provide more abstract, yet execu...
CHI
2009
ACM
14 years 10 months ago
2009
ACM
We discuss the problem of assessing and aiding user performance in dynamic tasks that require rapid selection among multiple information sources. Motivated by research in human se...
SIGMOD
2006
ACM
14 years 9 months ago
2006
ACM
We present our prototype system, OMCAT, which optimizes the reevaluation of a set of pending continuous spatio-temporal queries on trajectory data, when some of the trajectories a...