Wednesday, March 16, 2011

Open world assumption (OWA) vs Closed world assumption (CWA)

the closed world assumption implies that everything we don’t know is false, while the open world assumption states that everything we don’t know is undefined
—Stefano Mazzocchi, Closed World vs. Open World: the First Semantic Web Battle[36]

 Open world assumption (OWA) - eg. OWL (web ontology language)

Closed world assumption (CWA) - eg. SQL (structured query language)

http://www.w3.org/2007/OWL/wiki/Implementations

http://protege.stanford.edu/overview/protege-owl.html

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