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Re: OWL-s and Parallel Composition

From: ZHAO, Wenfeng <zhaowenfeng@gmail.com>
Date: Wed, 14 Jun 2006 13:20:26 +0800
Message-ID: <001d01c68f72$417f18d0$b7b3403b@zwf>
To: "Jyotishman Pathak" <jyotishman@gmail.com>, "Public-Sws-Ig@W3. Org" <public-sws-ig@w3.org>, "OWL-S ml" <owl-s@lists.mindswap.org>
Cc: <jpathak@us.ibm.com>
In my opinion, 

> 
> Hi,
> 
> Pardon me for my misunderstanding, but I am curious to learn whether

                                                                                                 Yes, 
it doesn't demonstrate the use of parallel control structure such as "Split" and "Split-Join".

> the OWL-S example [1] demonstrates parallel composition between
> multiple entities ? To me, it seems that there exists a composite
> service "FullCongoBuy", which in turn invokes a set of atomic and
> composite services. All these composite services follow somewhat
                                  No, "SigInAlternatives" comprise a "Choice" structure, 
and "FullCongoBuy" comprise an "If-Then-Else".

> sequential pattern (of execution). For example, the composite service
> "CreateAcctSequence" performs atomic process "CreateAcct" followed by
> atomic process "LoadUserProfile". Similarly, composite service
> "SignInSequence" follows the same pattern.
                               Yes, these two ones are pure sequential composite services.

> 
> So, at a higher level of abstraction, there seems to be a pure
> sequential flow in which these services/functions are executed.
> 
> Please clarify me if I am wrong here.
> 
> Thanks,
> - Jyoti
> 
> 
> 
> [1] http://www.daml.org/services/owl-s/1.1/CongoProcess.owl

> 
> -- 
> Jyotishman Pathak
> WWW: http://www.cs.iastate.edu/~jpathak
>
Received on Wednesday, 14 June 2006 05:20:46 UTC

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