2514 search results - page 315 / 503 » On the Computation of Approximations of Database Queries |
210
click to vote
SDM
2009
SIAM
16 years 4 months ago
2009
SIAM
Data stream analysis frequently relies on identifying correlations and posing conditional queries on the data after it has been seen. Correlated aggregates form an important examp...
201
click to vote
JACM
2012
13 years 9 months ago
2012
A fundamental problem in data management is to draw and maintain a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With la...
200
Voted
FOCS
2006
IEEE
16 years 25 days ago
2006
IEEE
We extend the binary search technique to searching in trees. We consider two models of queries: questions about vertices and questions about edges. We present a general approach t...
316
click to vote
GIS
2006
ACM
16 years 7 months ago
2006
ACM
Given a query point and a collection of spatial features, a multi-type nearest neighbor (MTNN) query finds the shortest tour for the query point such that only one instance of eac...
281
click to vote
ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Freshness and accuracy are two key measures of quality of service (QoS) in location-based, mobile continual queries (CQs). However, it is often difficult to provide both fresh and ...