The design of the POSTGRES data model is described. The data model is a relational model that has been extended with abstract data types including user-defined operators and proce...
This paper presents a Web page indexation model. In this model, a Web page is not viewed as a whole, but as a combination of a set of blocks based on their visual rendering, where ...
Ontologies are used as a means of expressing agreements to a vocabulary shared by a community in a coherent and consistent manner. As it happens in the Internet, ontologies are cr...
Ontologies are set to play a key r^ole in the "Semantic Web" by providing a source of shared and precisely defined terms that can be used in descriptions of web resource...
Distributed applications using file sharing and file replication, conferencing, and delivery in multimedia systems often need to use the semantics of causal multicast. Causal mult...