We designed and implemented a digital library system that supports content-based retrieval of multimedia objects based on MPEG-7 and XQuery. MPEG-7, a metadata standard for multim...
d on Dung’s [4] abstract argumentation system • arguments: trees of chained defeasible inferences • aim: determine the status of a query given a belief base • incorporation...
WS-Agreement offers a general language and protocol to establish agreements between two parties. In principle, this generality enables a wide variety of domains to be covered. Yet...
Wilfried Jouve, Julien Lancia, Charles Consel, Cal...
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...
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...