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Re: First feedback on MINUS

From: Steve Harris <steve.harris@garlik.com>
Date: Thu, 9 Jul 2009 17:43:48 +0100
Message-Id: <AE9A2116-2BEC-4D35-8DAA-7743756D7CF8@garlik.com>
To: "public-rdf-dawg@w3.org Group" <public-rdf-dawg@w3.org>
On 9 Jul 2009, at 17:32, Simon Schenk wrote:
>
> Am Donnerstag, den 09.07.2009, 12:08 -0400 schrieb Lee Feigenbaum:
>> 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?
>
> exactly.

I have to say that I don't find that any more or less surprising than  
the alternative.

- Steve

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Steve Harris
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Received on Thursday, 9 July 2009 16:44:25 GMT

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