2043 search results - page 230 / 409 » The Limits of Querying Ontologies |
ICDE
2007
IEEE
14 years 10 months ago
2007
IEEE
Linear optimization queries retrieve the top-K tuples in a sliding window of a data stream that maximize/minimize the linearly weighted sums of certain attribute values. To effici...
GIS
2003
ACM
14 years 10 months ago
2003
ACM
Moving object databases store and process data for objects that change location frequently. Materialized views maintained over time must be updated to reflect changes due to the m...
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...
SIGECOM
2003
ACM
14 years 2 months ago
2003
ACM
Preference elicitation — the process of asking queries to determine parties’ preferences — is a key part of many problems in electronic commerce. For example, a shopping age...
MOBICOM
2010
ACM
13 years 9 months ago
2010
ACM
Consider mobile targets moving in a plane and their movements being monitored by a network such as a field of sensors. We develop distributed algorithms for in-network tracking an...