- From: pat hayes <phayes@ai.uwf.edu>
- Date: Thu, 3 Apr 2003 11:27:21 -0500
- To: "Peter Crowther" <Peter.Crowther@networkinference.com>
- Cc: <www-webont-wg@w3.org>
> > From: pat hayes [mailto:phayes@ai.uwf.edu] >> >> >"people who have at least three values for property x." >> > >> >where x is a data valued property. I, too, struggle to think >> of an example >> >where one would actually want to use such a construct (but am open to >> >suggestion).... >> >> People who own three or more homes, people with at least three >> sources of income, people with at least three children, people with >> with at least three nationalities, people who have travelled to more >> than three foreign nations during the last six months,.... > >All good examples of cardinality contraints to objects; I have to say >that I'm not convinced that any of the following are naturally >datatypes: > >- homes >- sources of income >- children >- nationalities >- travel to a given nation during a date range > >Nationality, in my view, comes closest; but why is this better as a >datatype than an object? > I have no idea; but if someone has, I see no reason to forbid them from saying what they want to say. I guess you have stronger intuitions than I do about what characterizes a datatype. I see no reason why any of these might not be datatypes for some purposes. But for a more plausible example, how about people with three distinct social security numbers, or events which recur on at least three dates, or people who have entered the country at least three times (identified by the date and time of entry) during a certain year? Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spam
Received on Thursday, 3 April 2003 11:28:34 UTC