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RE: Review of the RDF Mapping (Action 315)

From: Michael Schneider <schneid@fzi.de>
Date: Tue, 7 Apr 2009 20:46:41 +0200
Message-ID: <0EF30CAA69519C4CB91D01481AEA06A0011DA954@judith.fzi.de>
To: "Peter F. Patel-Schneider" <pfps@research.bell-labs.com>
Cc: <public-owl-wg@w3.org>
Hi Peter!

I'm fine with everything that I do not mention.
Peter F. Patel-Schneider wrote:

>> * §2.1, 1st par: The explanation there ("recursive definition") is
>> 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, 
--> 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".

>> * 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.

But it's not so important. But I think the presentation should 
be at least everywhere the same: I just found that there are "," 
separating the zi and wi, but not for the yi.


Dipl.-Inform. Michael Schneider
Research Scientist, Dept. Information Process Engineering (IPE)
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Received on Tuesday, 7 April 2009 18:47:22 UTC

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