771 search results - page 42 / 155 » Access Methods and Query Processing Techniques |
DEXA
2004
Springer
14 years 3 months ago
2004
Springer
Efficient storage and retrieval of trajectory indexes has become an essential requirement for moving objects databases. The existing 3DR-tree is known to be an effective trajectory...
DASFAA
2009
IEEE
14 years 4 months ago
2009
IEEE
With the continued advancements in location-based services involved infrastructures, large amount of time-based location data are quickly accumulated. Distributed processing techni...
WAIM
2004
Springer
14 years 3 months ago
2004
Springer
A top-N selection query against a relation is to find the N tuples that satisfy the query condition the best but not necessarily completely. In this paper, we propose a new method ...
WWW
2006
ACM
14 years 10 months ago
2006
ACM
We introduce the notion of query substitution, that is, generating a new query to replace a user's original search query. Our technique uses modifications based on typical su...
ANLP
1992
13 years 11 months ago
1992
This paper briefly describes the current implementation status of an intelligent information retrieval system, MARIE, that employs natural language processing techniques. Descript...