140 search results - page 26 / 28 » On Expressive Number Restrictions in Description Logics |
AAAI
2000
13 years 9 months ago
2000
Just as actions can have indirect effects on the state of the world, so too can sensing actions have indirect effects on an agent's state of knowledge. In this paper, we inve...
ER
2007
Springer
14 years 1 months ago
2007
Springer
Abstract. We investigate the computational complexity of reasoning over various fragments of the Extended Entity-Relationship (EER) language, which includes a number of constructs:...
IEEESCC
2005
IEEE
14 years 1 months ago
2005
IEEE
Web service discovery is a key problem as the number of services is expected to increase dramatically. Service discovery at the present time is based primarily on keywords, or int...
JCSS
2000
13 years 7 months ago
2000
It is a well-known result of Fagin that the complexity class NP coincides with the class of problems expressible in existential second-order logic ( 1 1), which allows sentences c...
CIKM
2007
Springer
14 years 1 months ago
2007
Springer
We present an evolutionary clustering method which can be applied to multi-relational knowledge bases storing resource annotations expressed in the standard languages for the Sema...