213 search results - page 8 / 43 » Querying Partially Sound and Complete Data Sources |
DLOG
2011
12 years 11 months ago
2011
Query answering in Ontology Based Data Access (OBDA) exploits the knowledge of an ontology’s TBox to deal with incompleteness of the ABox (or data source). Current query-answerin...
AAAI
2007
13 years 10 months ago
2007
The Closed-World Assumption (CWA) on databases expresses that an atom not in the database is false. A more appropriate assumption for databases that are sound but partially incomp...
CIKM
2001
Springer
14 years 1 days ago
2001
Springer
Existing approaches for optimizing queries in data integration use decoupled strategies–attempting to optimize coverage and cost in two separate phases. Since sources tend to ha...
RR
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. The Semantic Web is commonly perceived as a web of partially interlinked machine readable data. This data is inherently distributed and resembles the structure of the web...
LPNMR
2005
Springer
14 years 1 months ago
2005
Springer
Abstract. The paper presents INFOMIX a successful application of ASP technology to the domain of Data Integration. INFOMIX is a novel system which supports powerful information int...