239 search results - page 43 / 48 » Complete Geometrical Query Languages |
ICALP
2004
Springer
14 years 22 days ago
2004
Springer
We define a natural notion of efficiency for approximate nearest-neighbor (ANN) search in general n-point metric spaces, namely the existence of a randomized algorithm which answ...
ICDT
2012
ACM
11 years 9 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
SIGMOD
1995
ACM
13 years 11 months ago
1995
ACM
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
CCS
2007
ACM
14 years 1 months ago
2007
ACM
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...
IJCNLP
2004
Springer
14 years 22 days ago
2004
Springer
One problem seriously affecting CLIR performance is the processing of queries with embedded foreign names. A proper noun dictionary is never complete rendering name translation fr...