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Re: [RIF Test Cases] Abridged Presentation syntax

From: Stella Mitchell <cleo@us.ibm.com>
Date: Sat, 23 Aug 2008 07:20:45 -0400
To: "Adrian Paschke" <Adrian.Paschke@gmx.de>
Cc: "Hassan A´t-Kaci" <hak@ilog.com>, public-rif-wg@w3.org, public-rif-wg-request@w3.org
Message-ID: <OF6364A3D9.2B728D5A-ON852574AE.003DED6D-852574AE.003E5310@us.ibm.com>
Adrian,

As I mentioned several times during our internal discussions, it would be
good to reconcile with the shortcuts defined for BLD PS.

In your UCR abridged presentation syntax table [2], rows 
1, 2, 3, 5,  6  and 7 are redundant with the shortcuts in DTB [1].

Row 4 is about text with a language tag. Axel currently has a proposal for
a shortcut for this in [3].

The syntax left in UCR that is not official PS syntax is:
   - shortcuts for external functions & predicates
   - can leave out "And" and conjuction is assumed
   - can leave out Forall for rules with variables and assume variables 
are quantified 
   - denoting the end of a rule with a period
 
For the (BLD) test cases, I think we should stay with normative BLD 
syntax,
and only use shortcuts that the group agrees to add to that syntax.

Stella


[1] 
http://www.w3.org/2005/rules/wiki/DTB#Shortcuts_for_Constants_in_RIF.27s_Presentation_Syntax

[2] http://www.w3.org/2005/rules/wiki/UCR#Use_Cases

[3] http://lists.w3.org/Archives/Public/public-rif-wg/2008Aug/0074.html






"Adrian Paschke" <Adrian.Paschke@gmx.de> 
Sent by: public-rif-wg-request@w3.org
08/23/2008 05:24 AM

To
"Hassan A´t-Kaci" <hak@ilog.com>
cc
public-rif-wg@w3.org
Subject
Re: [RIF Test Cases] Abridged Presentation syntax







H Hassan,

> 
> Hi Adrian,
> 
> I appreciate the motivation you invoke for introducing an Abridged
> Presentation Syntax (APS). This makes an APS expression an abbreviation
> of a PS expression, itself an abbreviation for the normative XML syntax.
> In DTB, Axel Polleres already defined abbreviations (although formally:
> 
http://www.w3.org/2005/rules/wiki/DTB#Shortcuts_for_Constants_in_RIF.27s_Presentation_Syntax
)
> and he used them for the examples of the DTB document. My question is,
> are the abridged forms for DTB consistent with those your introduce
> in http://www.w3.org/2005/rules/wiki/UCR#Use_Cases? If not, can it be
> made so? If so, could the two be specified formally along the rest of
> the EBNF rules for BLD Rules and BLD Conditions? 

Thanks for the hint - didn't know about the new abridged syntax in DTB. At 
the time when we specified the abridged presentation syntax (actually it 
was you and Harold who started it) for UCR, there was nothing in DTB. 

Will check if both are consistent or something is missing in DTB. 
Moreover, I will then simply link to DTB for the syntax of examples in 
UCR.


>Currently Axel's rules
> are hyperlinked to where they are defined in other W3C documents all
> over the place as an extension of the original BLD EBNF. It would be
> good to put together somewhere the complete set of lexical and syntactic
> EBNF rules for the real PS as it is actually used in *all* RIF documents
> (whether UCR, Core, BLD, DTB, PRD, ...). 

Yes, agree. I think it is now time to review again the full and abriged 
presentation syntax, complete it, and solve open issues. For instance, I 
remember the ":-" or "=>" question for rules presentation. 

We need final versions to update the examples in UCR, PRD, Core, ... and 
Test Cases.

>That would surely help *me* in
> my task to provide a correct working APS parser to automate generating
> the serialized XML for of all the examples in these documents 
> (http://www.w3.org/2008/08/19-rif-minutes.html#action08).
> 
> At any rate, I will be on vacation from tonight through August 31 and I
> will resume work on this after I am back.

Enjoy your vacations.

-Adrian


> 
> Adrian Paschke wrote:
> > Hi Jos,
> > 
> > You asked: 
> > 
> >> In
> >> addition, it is unclear to me which syntax they use. it is certainly
> not
> >> valid presentation syntax.
> > 
> > It is the abridged presentation syntax from UCR
> > (http://www.w3.org/2005/rules/wiki/UCR#Use_Cases) which was introduced
> there
> > to have a very compact and easy readable human-oriented format.
> > 
> > It might be also usable for the test cases to get a quick picture what
> the
> > rules of the test case are. The full presentation syntax can become 
very
> > complex, take e.g. the simple example of "?X>= (?Y+2) " which would be
> very
> > long-winded in the full presentation syntax and hard to read for a
> human.
> > 
> > But you are right; we need full presentation syntax to automatically
> > translate them into the concrete XML syntax. 
> > 
> > Hence, I would propose to describe the test cases in full presentation
> > syntax in the premises and conclusion field (or alternatively already 
in
> > concrete XML syntax) and optionally represent them in abridged
> presentation
> > syntax together with the narrative description of the test case in the
> > "Description" field. 
> > An alternative would be to have several (optional) premise / 
conclusion
> > fields which represent the test case in different syntaxes (abridge,
> full,
> > XML, PRD, BLD, ...).
> > 
> > - Adrian
> > 
> > 
> > -----UrsprŘngliche Nachricht-----
> > Von: public-rif-wg-request@w3.org 
[mailto:public-rif-wg-request@w3.org]
> Im
> > Auftrag von Jos de Bruijn
> > Gesendet: Donnerstag, 21. August 2008 15:46
> > An: Chris Welty
> > Cc: Public-Rif-Wg (E-mail)
> > Betreff: Re: Call for test cases
> > 
> > 
> > 
> >> Below are instructions to create new test cases on the WIKI. The test
> >> cases will be automatically classified into the category of the used
> >> template and the specified dialect. We probably might need more
> >> templates (categories) later,  as described here
> >> http://www.w3.org/2005/rules/wiki/Test#Categories_of_RIF_Test_Cases
> >>
> >> But let's start simple first and collect positive entailment tests
> which
> >> demonstrate BLD and DTB.
> >>
> >> The properties of the templates for test cases are described here
> >> http://www.w3.org/2005/rules/wiki/Test_Case_Format
> > 
> > The page lacks descriptions of the properties Text and Format and
> > guidelines about how to format the title.
> > Then, it is not very clear to me what the difference is between the
> > properties Purpose and Description.
> > 
> >> Some example test cases for BLD (positive entailment test cases) can 
be
> >> found here
> >>
> >> http://www.w3.org/2005/rules/wiki/Test_Case_Ordered_Relations
> >> http://www.w3.org/2005/rules/wiki/Test_Case_Unordered_Relations
> >> http://www.w3.org/2005/rules/wiki/Test_Case_Frames
> >> http://www.w3.org/2005/rules/wiki/Test_Case_Equality
> > 
> > All the examples like the required properties title and purpose.  In
> > addition, it is unclear to me which syntax they use. it is certainly 
not
> > valid presentation syntax.
> > 
> > 
> > I tried to write a test case (a negative entailment test), but I was 
not
> > sure whether it is in the correct format.  Please check:
> > http://www.w3.org/2005/rules/wiki/Test_Case_Local_Constant
> > 
> > 
> > Best, Jos
> > 
> > 
> > 
> > 
> > 
> 
> 
> -- 
> Hassan A´t-Kaci  *  ILOG, Inc. - Product Division R&D
> http://koala.ilog.fr/wiki/bin/view/Main/HassanAitKaci
> 

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Received on Saturday, 23 August 2008 11:21:43 GMT

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