49 search results - page 2 / 10 » Grouping and aggregation in the concept-oriented data model |
PVLDB
2010
13 years 3 months ago
2010
Uncertain data streams are increasingly common in real-world deployments and monitoring applications require the evaluation of complex queries on such streams. In this paper, we c...
HCI
2009
13 years 2 months ago
2009
During persistent surveillance of a given population in a conflict situation, data management can quickly become unwieldy due to the inundation of low-level information from many, ...
EDBT
2009
ACM
13 years 9 months ago
2009
ACM
Decision Support Systems (DSS) are information systems that support decision making processes. In many scenarios these systems are built on top of data managed by DBMSs and make e...
DEBU
2002
13 years 4 months ago
2002
Spatio-temporal databases store information about the positions of individual objects over time. In many applications however, such as traffic supervision or mobile communication ...
GLOBECOM
2007
IEEE
13 years 11 months ago
2007
IEEE
—This paper presents a group-based security scheme for distributed wireless sensor networks. The scheme is proposed with 3-types of entities: one or more base stations, Y number ...