- From: Lee Feigenbaum <lee@thefigtrees.net>
- Date: Thu, 09 Jul 2009 12:08:39 -0400
- To: Simon Schenk <sschenk@uni-koblenz.de>
- CC: "public-rdf-dawg@w3.org" <public-rdf-dawg@w3.org>
Simon Schenk wrote:
> After some chatting with colleagues:
>
> 1) Whatever semantics we choose, the operator should not be called
> MINUS, as its semantics is not even roughly clear intuitively.
>
> 2) A restriction to min. 1 shared variable is not intuitive.
Simon, does #2 mean explicitly that your colleagues expect that
{?a="a"} MINUS {?b="b"} = no solutions?
Or does it mean that your colleagues are uncomfortable with the
restriction from an implementation or theoretic point of view?
Or something else?
Lee
>
> Cheers,
> Simon
>
Received on Thursday, 9 July 2009 16:09:36 UTC