Exploiting the complex structure of relational data enables to build better models by taking into account the additional information provided by the links between objects. We exten...
: To a large degree information has become accessible – anytime, anywhere – but not necessarily useful. Unless the right information is presented at the right time, in the righ...
We present a browser-extending Semantic Web extraction system that maps HTML documents to tables and, where possible, to rules. First, the basic data extractor ViPER distills and ...
Web Directories are repositories of Web pages organized in a hierarchy of topics and sub-topics. In this paper, we present DirectoryRank, a ranking framework that orders the pages...
Vlassis Krikos, Sofia Stamou, Pavlos Kokosis, Alex...
Although the OWL Web Ontology Language adds considerable expressive power to the Semantic Web it does have expressive limitations, particularly with respect to what can be said ab...