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Re: [wbs] response to 'W3C PROV Vocabulary Usage Survey'

From: Stian Soiland-Reyes <soiland-reyes@cs.manchester.ac.uk>
Date: Tue, 5 Mar 2013 14:00:53 +0000
Message-ID: <CAPRnXtmfw+9W2AsYdaVjW-heBU4WCUzx7q6zsFteRydSTC05YQ@mail.gmail.com>
To: Sarven Capadisli <info@csarven.ca>
Cc: public-prov-comments@w3.org
Hi, I am one of the members of the W3C Provenance WG.

Thanks for your registrations. Our survey system is a bit 'lossy' as
it overwrites based on email address at
https://www.w3.org/2002/09/wbs/46974/prov-vocabulary-usage-survey/results
- I'll see if we can find a way to list them all.


The rest of this email is just a personal comment and does not
(necessarily) reflect the view of the WG.


I think your datasets at  http://fao.270a.info/ and
http://oecd.270a.info/ show beautiful use of PROV and VoID, has a very
simple and easy way to present the metadata as HTML, and are overall
very understandable and well structured.


Is the group and/or myself OK to promote these in say a blog post as
an example of best practice, or is the site not yet public? I find no
links to them with Google (although they have been indexed).



A few questions or bugs, which I hope you don't mind me raising:


If I retrieve http://fao.270a.info/provenance/activity/20130214190859
with Accept: text/turtle, I get redirected to
http://fao.270a.info/provenance/activity/20130214190859.rdf rather
than http://fao.270a.info/provenance/activity/20130214190859.turtle



Looking at http://fao.270a.info/provenance/activity/20130214190859.html
it includes alternate-links to json, rdf and turtle (yay!) - but the
turtle link has:

 <link rel="alternate" type="text/plain"
href="http://fao.270a.info/provenance/activity/20130214190859.turtle"
title="Turtle version of this document"/>

Here I assumed type should be text/turtle. The dc:format of the ...rdf
also shows text/plain instead of text/turtle.



In the prov:Activity
http://fao.270a.info/provenance/activity/20130214190859, you list:

    prov:used <http://www.fao.org/figis/...9>,
         <https://launchpad.net/ubuntu/+source/wget> .

I like how you add prov:wasDerivedFrom between the generated resources
and the 'source' entity - this helps distinguish the source entity
from the wget tool - like in
http://oecd.270a.info/code/1.0/CL_TIGS_IO_LOCATION - without needing
to qualify it with custom prov:Role's.


I initially wondered about the fact that the wget software is also
'used', as there are multiple approaches (ex:WGet specialization of
prov:Activity; or a prov:Agent  (the server?) executing prov:hadPlan
<http://wget>; or perhaps a specialization with prov:wasAssociatedWith
[ prov:specializationOf <http://wget>, prov:actedOnBehalfOf :you ] . )


Is the wget 'used' here because the activity is considered to be
executing a script (or manually executed command) that combines wget
and the FAO query..?   If an actual script was used, perhaps it could
be referred to with prov:hadPlan in a qualified association:

<http://example.com/activity> prov:qualifiedAssociation [
    prov:agent <http://csarven.ca/#i> ;
    prov:hadPlan <http://github.com/some/script.pl> ;
]


Or just embedded commands:

:a prov:qualifiedAssociation [
    prov:agent <http://csarven.ca/#i> ;
    prov:hadPlan [ a ex:Command ;
        prov:value "wget http://asdjfhjsadhfjsadfh"
    ] ;
]


Although I can understand if you think that would be too much detail! :-)



On Sun, Feb 17, 2013 at 5:57 PM, WBS Mailer on behalf of
info@csarven.ca <webmaster@w3.org> wrote:
> The following answers have been successfully submitted to 'W3C PROV
> Vocabulary Usage Survey' (Provenance Working Group) for Sarven Capadisli.
>
>
> ---------------------------------
> Vocabulary Usage Information
> ----
> Please provide the name and url of the dataset, website or other set of
> content that uses PROV  to describe provenance. We also encourage you to
> fill out this form if your site uses an extension to PROV.
> Name: FAO Linked DataURL: http://fao.270a.info/Description: FAO (Food and
> Agriculture Organization of the United Nations) data published using the
> Linked Data design principles
>
>
> ---------------------------------
> Contact Information
> ----
>
> Name: Sarven CapadisliEmail: info@csarven.ca
>
> ---------------------------------
> PROV Encodings Supported
> ----
> Choose all that apply
>
>  * [x] PROV-O
>  * [ ] PROV-N
>  * [ ] PROV-XML
> Please list any additional supported encodings (e.g. PROV-JSON, PROV-CSV,
> etc.) in the free-text area below:
>
>
> ---------------------------------
> Feature Coverage
> ----
> Indicate covered features by selecting one of the following below:
>  * 1) I Don't Know
>  * 2) Used
>  * 3) Will be used in the future
>
>  * Entity: [ 2 ++ ]
>  * Activity: [ 2 ++ ]
>  * Agent: [ 2 ++ ]
>  * Generation: [ 2 ++ ]
>  * Usage: [ 2 ++ ]
>  * Communication: [ 2 ++ ]
>  * Derivation: [ 2 ++ ]
>  * Attribution: [ 2 ++ ]
>  * Association: [ No opinion ]
>  * Delegation: [ 2 ++ ]
>  * Start: [ 2 ++ ]
>  * End: [ 2 ++ ]
>  * Invalidation: [ No opinion ]
>  * Revision: [ No opinion ]
>  * Quotation: [ No opinion ]
>  * PrimarySource: [ No opinion ]
>  * Person: [ No opinion ]
>  * Organization: [ No opinion ]
>  * SoftwareAgent: [ No opinion ]
>  * Plan: [ No opinion ]
>  * Influence: [ No opinion ]
>  * Bundle: [ No opinion ]
>  * Specialization: [ No opinion ]
>  * Alternate: [ No opinion ]
>  * Collection: [ No opinion ]
>  * EmptyCollection: [ No opinion ]
>  * Membership: [ No opinion ]
>  * Identifier: [ No opinion ]
>  * Attributes: [ No opinion ]
>  * Label: [ No opinion ]
>  * Location
>
> : [ No opinion ]
>  * Role: [ No opinion ]
>  * Type: [ No opinion ]
>  * Value: [ No opinion ]
> Rationale:
>
>
> ---------------------------------
> Provenance Exchange
> ----
> Is this vocabulary extension generated or consumed by an implementation,
> which one(s)?
>
>
> These answers were last modified on 17 February 2013 at 17:56:20 U.T.C.
> by Sarven Capadisli
>
> Answers to this questionnaire can be set and changed at
> https://www.w3.org/2002/09/wbs/46974/prov-vocabulary-usage-survey/ until
> 2013-03-30.
>
>  Regards,
>
>  The Automatic WBS Mailer
>
>



-- 
Stian Soiland-Reyes, myGrid team
School of Computer Science
The University of Manchester
Received on Tuesday, 5 March 2013 14:01:45 UTC

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