On Oct 28, 2010, at 11:58 AM, joel sachs wrote:
Hey Rich, Hilmar, Paul, and everyone -
I liked the definition from a couple of weeks ago:
"An occurrence is a tuple consiting of time, place, individual, and some optional properties."
What's that lacking?
Nothing, but the form of "occurrence" as a 3-way relation between a thing, a place and a time might be less amenable to formal reasoning than some other formulations, depending on how its rendered.
I thought that was the reason others had introduced "event" as place + time. Otherwise, what is the reason for "event"?
Arlin ------- Arlin Stoltzfus (arlin@umd.edu) Fellow, IBBR; Adj. Assoc. Prof., UMCP; Research Biologist, NIST IBBR, 9600 Gudelsky Drive, Rockville, MD tel: 240 314 6208; web: www.molevol.org