- From: Jim Hendler <hendler@cs.umd.edu>
- Date: Wed, 26 Feb 2003 12:28:40 -0500
- To: "Roger L. Costello" <costello@mitre.org>, public-webont-comments@w3.org
- Cc: "Costello,Roger L." <costello@mitre.org>
At 12:02 -0500 2/26/03, Roger L. Costello wrote: >Hi Folks, > >I am a bit confused about what a functional property is. Let me give an >example: > >Let the property be: lengthOf > - it maps a River to a Distance > >Suppose that one instance document asserts this: > > The Yangtze has a lengthOf 6300 kilometers. > >A second instance document then asserts this: > > The Yangtze has a lengthOf 3937.5 miles. > >If lengthOf has been declared "functional" then we can infer that: > > 6300 kilometers = 3937.5 miles. > >Is the purpose of functional to enable inferences like this? /Roger Roger - way cool example - (Jeremy, I wonder if we should make this one of our test cases for Owl Full). This is definitely one of the uses for functional property. -- Professor James Hendler hendler@cs.umd.edu Director, Semantic Web and Agent Technologies 301-405-2696 Maryland Information and Network Dynamics Lab. 301-405-6707 (Fax) Univ of Maryland, College Park, MD 20742 240-731-3822 (Cell) http://www.cs.umd.edu/users/hendler
Received on Wednesday, 26 February 2003 12:28:50 UTC