2043 search results - page 22 / 409 » The Limits of Querying Ontologies |
ICTIR
2009
Springer
13 years 6 months ago
2009
Springer
Intuitively, any `bag of words' approach in IR should benefit from taking term dependencies into account. Unfortunately, for years the results of exploiting such dependencies ...
SEMWEB
2010
Springer
13 years 6 months ago
2010
Springer
The ability to answer temporal-oriented questions based on clinical narratives is essential to clinical research. The temporal dimension in medical data analysis enables clinical r...
DLOG
2011
13 years 5 days ago
2011
We show that, although conjunctive queries over OWL 2 QL ontologies are reducible to database queries, no algorithm can construct such a reduction in polynomial time without changi...
DEXAW
2009
IEEE
14 years 3 months ago
2009
IEEE
One of the main limitations in using ontologies in modern information systems is due to the fact that the design and maintenance of ontologies is a complex activity that requires ...