651 search results - page 91 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
DAGM
2007
Springer
14 years 3 months ago
2007
Springer
We propose an unsupervised “local learning” algorithm for learning a metric in the input space. Geometrically, for a given query point, the algorithm finds the minimum volume ...
VLDB
1993
ACM
14 years 1 months ago
1993
ACM
In this paper we propose a new declustering method which is particularly suitable for image and cartographic databases used for visualization. Our declustering method is based on ...
JCP
2007
13 years 9 months ago
2007
Abstract— Data synopsis is a lossy compressed representation of data stored into databases that helps the query optimizer to speed up the query process, e.g. time to retrieve the...
CIDR
2009
13 years 10 months ago
2009
Recent excitement in the database community surrounding new applications--analytic, scientific, graph, geospatial, etc.--has led to an explosion in research on database storage sy...
SIGMOD
2005
ACM
14 years 9 months ago
2005
ACM
We present a method to evaluate path queries based on the novel concept of partial path instances. Our method (1) maximizes performance by means of sequential scans or asynchronou...