427 search results - page 74 / 86 » Conjunctive Query Answering in EL using a Database System |
WSDM
2009
ACM
14 years 3 months ago
2009
ACM
There has been considerable past work on efficiently computing top k objects by aggregating information from multiple ranked lists of these objects. An important instance of this...
DIALM
2003
ACM
14 years 1 months ago
2003
ACM
A common way of storing spatio-temporal information about mobile devices is in the form of a 3D (2D geography + time) trajectory. We argue that when cellular phones and Personal D...
CIKM
2006
Springer
13 years 10 months ago
2006
Springer
Due to the resource limitation in the data stream environment, it has been reported that answering user queries according to the wavelet synopsis of a stream is an essential abili...
CIKM
2009
Springer
14 years 3 months ago
2009
Springer
We study the problem of continuous monitoring of top-k queries over multiple non-synchronized streams. Assuming a sliding window model, this general problem has been a well addres...
VLDB
1999
ACM
14 years 25 days ago
1999
ACM
Recent high-performance processors employ sophisticated techniques to overlap and simultaneously execute multiple computation and memory operations. Intuitively, these techniques ...