- From: pat hayes <phayes@ai.uwf.edu>
- Date: Wed, 25 Apr 2001 11:51:48 -0500
- To: Gerardo Horvilleur <mago@mail.internet.com.mx>
- Cc: www-rdf-logic@w3.org
>. On the other hand: a property with multiple ranges seems a little >weird to me. Does anyone have a good example of why it might be useful? It is easy to think of some. Imagine hasParent (relates child to parent) and suppose someone wants to introduce classes corresponding to ethnicity, and to state that the hasParent never crosses ethnicity classes. Or an employee database which has classes corresponding to employment contract type, and a property salaryTax which gives the taxation category of emplyees categorised by their employment contract. More mathematical examples arise from what is called 'overloading' in programming language typing, where one might have addition taking integers to integers, reals to reals and bignums to bignums. Pat Hayes --------------------------------------------------------------------- IHMC (850)434 8903 home 40 South Alcaniz St. (850)202 4416 office Pensacola, FL 32501 (850)202 4440 fax phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes
Received on Wednesday, 25 April 2001 12:51:54 UTC