116 search results - page 13 / 24 » Database querying under changing preferences |
VLDB
2001
ACM
14 years 7 months ago
2001
ACM
Abstract In this paper we present a mechanism for approximately translating Boolean query constraints across heterogeneous information sources. Achieving the best translation is ch...
ICIP
1998
IEEE
14 years 9 months ago
1998
IEEE
We describe a new invariant-based data model for image databases under our approach for shape-based retrieval. The data model relies on contours description of the image shape, an...
EDBT
2008
ACM
14 years 7 months ago
2008
ACM
Index trees created using distance based indexing are difficult to maintain online since the distance function involved is often costly to compute. This problem is intensified whe...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
There has been a significant amount of excitement and recent work on column-oriented database systems ("column-stores"). These database systems have been shown to perfor...
VLDB
1999
ACM
13 years 11 months ago
1999
ACM
We present a pipelining, dynamically usercontrollable reorder operator, for use in dataintensive applications. Allowing the user to reorder the data delivery on the fly increases...