SIGMOD
2006
ACM
15 years 13 days ago
2006
ACM
This paper presents a principled framework for efficient processing of ad-hoc top-k (ranking) aggregate queries, which provide the k groups with the highest aggregates as results....
SIGMOD
2008
ACM
15 years 13 days ago
2008
ACM
This demo presents a privacy-preserving aggregate location monitoring system, namely, TinyCasper, in which we can monitor moving objects in wireless sensor networks while preservi...
VLDB
2009
ACM
15 years 16 days ago
2009
ACM
We consider the problem of using sampling to estimate the result of an aggregation operation over a subset-based SQL query, where a subquery is correlated to an outer query by a NO...