2492 search results - page 249 / 499 » Ontology-based Database Access |
294
click to vote
GIS
2009
ACM
16 years 7 months ago
2009
ACM
The k-anonymity technique is widely used to provide location privacy protection for accessing location-based services (LBS), i.e., the exact location of a query initiator is cloak...
275
click to vote
VLDB
2001
ACM
16 years 6 months ago
2001
ACM
The problem of answering queries using views is to find efficient methods of answering a query using a set of previously materialized views over the database, rather than accessing...
268
click to vote
SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
The family of threshold algorithm (i.e., TA) has been widely studied for efficiently computing top-k queries. TA uses a sort-merge framework that assumes data lists are pre-sorted...
169
click to vote
PODS
2008
ACM
16 years 6 months ago
2008
ACM
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...
156
click to vote
EDBT
2008
ACM
16 years 6 months ago
2008
ACM
A form-based query interface is usually the preferred means to provide an unsophisticated user access to a database. Not only is such an interface easy to use, requiring no techni...