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RE: Review of the RDF Mapping (Action 315)

From: Michael Schneider <schneid@fzi.de>
Date: Wed, 8 Apr 2009 14:58:56 +0200
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A0011DA9FB@judith.fzi.de>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
Cc: <public-owl-wg@w3.org>
Peter F. Patel-Schneider wrote:

>>>> * §2.1, 1st par: The explanation there ("recursive definition") is
>>>hard
>>>> to understand. I admit that I did not get it even after reading it a
>>>> second time. Perhaps explain by example, or reword the text.
>>>
>>>I'm not sure how to reword and keep both brevity and correctness.
>I've
>>>made a slight change, which might help.
>>
>> I believe I now know where (at least part of) my confusion results
>from:
>>
>> [[
>>     if the mapping of a construct refers to the mapping of a
>> --> subconstruct,
>>     then the triples generated by the recursive invocation
>>     of the mapping are added to the graph under construction,
>>     and
>> --> its
>>     main node is used in place of the recursive invocation itself.
>> ]]
>>
>> I guess it is the "its". Does this "its" refer to the "subconstruct"?
>> In any case, the best thing would be to explicitly write the thing
>> being meant instead of "its".
>
>"its" refers to the mapping of the subconstruct
>
>I've made a change to try to make this clearer.

Now it's (rather than "its") clear!

>>>> * Table 16, owl:hasKey: Is it deliberate that the sets "y1,...",
>>>> "z1,..." and "w1,..." are not enclosed in "{ }"? Looks like a typo.
>>>
>>>You mean in T(SEQ y1 ... yn) etc.  Yes, this is very deliberate.
>These
>>>are not sets.
>>
>> Well, but they are /called/ "sets". And the order of all the yi
>> doesn't matter. Same for all the zi, and for all the wi.
>
>The wording has been changed to use "sequence".

Hm, ok, as RDF they are sequences. That, semantically, the relative order
within each such sequence does not play a role, well, does not play a role
in the RDF mapping document. So I'm fine.

Summary: All my comments to the RDF Mapping have now been answered
in a satisfactory way.

Michael

--
Dipl.-Inform. Michael Schneider
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Received on Wednesday, 8 April 2009 12:59:38 GMT

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