Re: [Eulermoz-developers] Re: N3ParserX.py question

[naudts g. <nau...@ya...>]

Hallo Jos,
--- Jos De_Roo <jos...@ag...> wrote:

> Guido, as we actually use it, [] just means _:x
> i.e. a blank node.
> What we use to express an inconsistency is for
> instance
> {?A owl:equivalentClass owl:Nothing. ?X a ?A} => {}.
> 
Thanks, Jos. I apparently got the two things mixed up.
> I also still think that we have to map the triple
>   s p o.
> to the binary predicate
>   p(s, o).
> as used in the actual ecmascript.
Do you react to something I said here? I agree the RDF
data model describes a property as a binary predicate;
but what is the connection with the ecmascript? 
Regards, Guido
> 
> regards,
> jos
> 
> -- 
> Jos De Roo, AGFA http://www.agfa.com/w3c/jdroo/
> 
> 
> 
> 
> naudts guido <nau...@ya...>
> Sent by:
> eul...@li...
> 02/09/2004 12:51
> 
>  
>         To:     ant...@4c...,
> eulermoz_dev 
> <eul...@li...>
>         cc:     (bcc: Jos
> De_Roo/AMDUS/MOR/Agfa-NV/BE/BAYER)
>         Subject:        [Eulermoz-developers] Re:
> N3ParserX.py question
> 
> 
> Hallo Antonio,
> I indeed did not implement these parts of the
> specification, as I did not find these features very
> usefull except for []). See further my comments
> after
> your text.
> Now the specification I give in my source code is a
> specification but there are others and there is
> really
> no official spec (it should have to be made) so I
> try
> to follow what Berners-Lee writes in his
> introduction
> to N3.
> See for specifications:
> www.w3.org/DesignIssues/Notation3.html
> I started also translating my parser to Javascript.
> Are you doing the same thing? Or planning to do so?
> Does it make sense that I make a translation?
> If I do, I will add the missing features.
> --- ant...@4c... wrote:
> 
> > Hallo Naudts.
> >
> > As you recommended to us we are on N3 parser in
> > JavaScript (trying to work
> > it out at least) and we are using your N3 parser
> as
> > a guide.
> >
> > But there are a couple of questions  it would be
> > nice if you give us a
> > hint about how to use then and how they should be
> > treated.
> > Well it's just enough if you tell us where do you
> > find this specification.
> >
> >
> > a)Line 2046
> > # verb ::= ">-" prop "->"    # has xxx of
> > #       | "<-" prop "<-"    # is xxx of
> >
> I implemented the forms:
> :s has :p of :o.
> and
> :s is :p of :o.
> So I could easily implement also the ">-", "->",
> "<-" and "<-" by treating them just the same but
> does
> this add much? Well, for completeness sake I ought
> have done it, but I never did.
> > b)Line 2074
> > # property_list ::= void   # to allow [...].
> > #                | verb space+ object_list
> > #                | verb space+ object_list space+
> > ";" space+ property_list
> > #                | ":-" anonnode  #to allow two
> > anonymous forms to be
> > given eg [ a :Truth; :- { :sky :color :blue } ] )
> > #                | ":-" anonnode ";" property_list
> > #                ;
> >
> I did not implement []. Still missing. [] is equal
> to
> the false value; it comes today in place of
> log:falseHood; I know Jos De Roo  uses it.(Correct
> me
> Jos if I am wrong)
> The ":-" is another feature of the specification
> which
> I did not implement as I thought this to be totally
> superfluous.For its meaning see:
> http://infomesh.net/2002/notation3/
> Cheers, Guido.
> > Thanks.
> > Cheers
> > Antonio
> >
> 
> 
> 
> 
> 
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