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Re: First feedback on MINUS

From: Lee Feigenbaum <lee@thefigtrees.net>
Date: Thu, 09 Jul 2009 12:08:39 -0400
Message-ID: <4A561607.5060507@thefigtrees.net>
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 GMT

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