10 search results - page 1 / 2 » An Extensible Notation for Spatiotemporal Index Queries |
SIGMOD
1998
ACM
13 years 10 months ago
1998
ACM
CORR
2007
Springer
13 years 10 months ago
2007
Springer
Using Dirac Notation as a powerful tool, we investigate the three classical Information Retrieval (IR) models and some their extensions. We show that almost all such models can be...
SIGMOD
2002
ACM
14 years 11 months ago
2002
ACM
Time-parameterized queries (TP queries for short) retrieve (i) the actual result at the time that the query is issued, (ii) the validity period of the result given the current mot...
SSDBM
1998
IEEE
14 years 3 months ago
1998
IEEE
: A new issue that arises in modern applications involves the efficient manipulation of (static or moving) spatial objects, and the relationships among them. As a result, modern da...
DEXA
2003
Springer
14 years 4 months ago
2003
Springer
Moving-objects databases need a spatio-temporal indexing scheme for moving objects to efficiently process queries over continuously changing locations of the objects. A simple exte...