152 search results - page 24 / 31 » Efficient computation of personal aggregate queries on blogs |
SIGMOD
2010
ACM
13 years 3 months ago
2010
ACM
We propose and study a new ranking problem in versioned databases. Consider a database of versioned objects which have different valid instances along a history (e.g., documents i...
ICDE
2010
IEEE
14 years 8 months ago
2010
IEEE
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...
EWSN
2009
Springer
14 years 9 months ago
2009
Springer
Multi-hop cluster hierarchy has been presented as an organization for large wireless sensor networks (WSNs) that can provide scalable routing, data aggregation, and querying. In th...
HPDC
2010
IEEE
13 years 9 months ago
2010
IEEE
Data is routinely created, disseminated, and processed in distributed systems that span multiple administrative domains. To maintain accountability while the data is transformed b...
IDEAS
2006
IEEE
14 years 2 months ago
2006
IEEE
Unlike numerical preferences, preferences on attribute values do not show an inherent total order, but skyline computation has to rely on partial orderings explicitly stated by th...