On Sat, Jun 02, 2007 at 01:37:19PM +0000, Tasneem Memon wrote:
> We can make the system ask the user as to what membership degree s/he wants to get the values, but we don?t want to make the system interactive, where a user gives a membership degree value of his/her choice. These operators are supposed to work just like the other operators in SQL.. you just put them in the query and get a result. I have put 0.8 because all the case studies I have made for the NEAR, 0.8 seems to be the best choice.. 0.9 narrows the range.. 0.75 or 0.7 gets those values also that are irrelevant.. However, these values will no more seem to be irrelevant when we haven?t got any values till the md 0.8, so the operator fetches them when they are the NEARest.
While having them function just like any other operator is good, it
seems like you're making quite a bit of an assumption for the user;
namely that you know what their data looks like better than they might.
Is it not possible that someone would come along with a dataset that
looks different enough from your test cases so that the values you
picked wouldn't work?
--
Jim Nasby decibel(at)decibel(dot)org
EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)