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Re: Ann: Web Services Architecture Requirements published (fwd)

From: Bernard Horan <Bernard.Horan@Sun.COM>
Date: Thu, 02 May 2002 10:22:10 +0100
To: www-ws-arch@w3.org
Cc: www-webont-wg@w3.org
Message-id: <3CD10542.AC733512@sun.com>
All

I'm a little concerned by the restrictive definition of a web service in
this document (I'd be more concerned if it wasn't a draft).

D-AC012 [1] states that the WSAWG will "identify or create user
scenarios and use cases". In addition, D-AC009 [2] states that the WSA
is "is aligned with the semantic web initiative at W3C". However, the
definition of a web service (WS) in the requirements document is
restricted to its interfaces, whereas the 'Ubiquitous Computing' use
case identified by WebOnt[3] identifies the need to describe a WS in
terms of its semantics, i.e. "what it does, rather than how" (which is
also reflected in the WSA requirements D-AR003.2 [4]).

Furthermore, there's no mention in the definition of a WS for the need
to describe QoS issues. However, in D-AC018 [5] there's mention of a
need to _measure_ QoS. IMHO it's important to be able  to describe a web
service in QoS terms, such as its availability, reliability, cost,
expected response time, etc.
 
Refs:
[1] http://www.w3.org/TR/2002/WD-wsa-reqs-20020429#AC012
[2] http://www.w3.org/TR/2002/WD-wsa-reqs-20020429#AC009
[3] http://www.w3.org/TR/2002/WD-webont-req-20020307/#usecase-ubiquitous
[4] http://www.w3.org/TR/2002/WD-wsa-reqs-20020429#AC003
[5] http://www.w3.org/TR/2002/WD-wsa-reqs-20020429#AC018

B

Jim Hendler wrote:
> 
> At 7:30 AM -0400 4/30/02, Dan Brickley wrote:
> >Hi
> >
> >For info.
> >
> >It might be interesting to consider the application of WebOnt's product to
> >some of the requirements outlined in this doc...
> >
> >Dan
> 
> To elaborate on Dan's point - this document is the requirments doc
> for the Web Services Description group.  They include a short section
> on Semantic Web interaction, and suggest that they'd like to see
> review comments from RDF-IG and related groups -- they have a public
> comments list set up (as we did).  I encourage you to look this
> document over, think about it (particularly in light of our agents
> and devices use cases) and send your comments.
>   -Jim H.
> 
> >---------- Forwarded message ----------
> >Date: Tue, 30 Apr 2002 07:24:02 -0400
> >From: Hugo Haas <hugo@w3.org>
> >To: www-rdf-interest@w3.org
> >Subject: Ann: Web Services Architecture Requirements published
> >Resent-Date: Tue, 30 Apr 2002 07:24:38 -0400 (EDT)
> >Resent-From: www-rdf-interest@w3.org
> >
> >FYI.
> >
> >Regards,
> >
> >Hugo
> >
> >--
> >Hugo Haas - W3C
> >mailto:hugo@w3.org - http://www.w3.org/People/Hugo/ - tel:+1-617-452-2092
> >
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> >Date: Mon, 29 Apr 2002 15:23:58 -0400
> >From: Christopher Ferris <chris.ferris@sun.com>
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> >Subject: Ann: Web Services Architecture Requirements published
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> >
> >On behalf of the Web Services Architecture Working Group,
> >I am pleased to announce the availability of our first
> >W3C Working Draft of the Web Services Architecture Requirements
> >document[1].
> >
> >We invite comments on this document be sent to the publicly
> >archived www-wsa-comments@w3.org mailing list.
> >
> >We especially invite review and additional potential requirements from
> >the following groups:
> >
> >   Web Services Description Working Group
> >   XML Protocol Working Group
> >
> >Thank you,
> >
> >Chris Ferris, Chair Web Services Architecture Working Group
> >
> >[1] http://www.w3.org/TR/2002/WD-wsa-reqs-20020429
> 
> --
> Professor James Hendler                           hendler@cs.umd.edu
> Director, Semantic Web and Agent Technologies     301-405-2696
> Maryland Information and Network Dynamics Lab.    301-405-6707 (Fax)
> AV Williams Building, Univ of Maryland            College Park, MD 20742
> http://www.cs.umd.edu/users/hendler
Received on Thursday, 2 May 2002 05:22:19 GMT

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