176 search results - page 8 / 36 » Supporting ranking queries on uncertain and incomplete data |
SIGMOD
2010
ACM
14 years 9 days ago
2010
ACM
Uncertain data streams, where data is incomplete, imprecise, and even misleading, have been observed in many environments. Feeding such data streams to existing stream systems pro...
ACISICIS
2005
IEEE
14 years 1 months ago
2005
IEEE
Uncertainty always exists as an unavoidable factor in any pervasive context-aware applications. This is mostly caused by the imperfectness and incompleteness of data. In this pape...
SIGMOD
2005
ACM
14 years 7 months ago
2005
ACM
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
VLDB
1998
ACM
13 years 11 months ago
1998
ACM
We propose and evaluate two indexing schemes for improving the efficiency of data retrieval in high-dimensional databases that are incomplete. These schemes are novel in that the ...
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
The Voronoi diagram is an important technique for answering nearest-neighbor queries for spatial databases. In this paper, we study how the Voronoi diagram can be used on uncertain...