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Re: data format for gathered information

From: Ivan Herman <ivan@w3.org>
Date: Wed, 28 Feb 2007 13:16:53 +0100
Message-ID: <45E572B5.9080407@w3.org>
To: Leo Sauermann <leo.sauermann@dfki.de>
Cc: Danny Ayers <danny.ayers@gmail.com>, W3C SWEO IG <public-sweo-ig@w3.org>, Kingsley Idehen <kidehen@openlinksw.com>, Benjamin Nowack <bnowack@appmosphere.com>, Ian Davis <Ian.Davis@talis.com>
Leo,

it is a bit difficult to edit, because the page should reflect
concensus... so I prefer to comment and discuss here.

- Using the doap, skos, etc, is obviously the way to go. Actually, using
skos is a great idea of yours!

- I am not sure about the usage of RSS. I have the feeling that it is a
little bit of a misuse here. I wonder whether the full power of DC is
not enough here; not only the core dc terms like dc:title and such that
everybody knows but, also, the dcterm vocabulary[1] I have the
impression that those, combined with maybe some extra properties of our
own may replace your choice of RSS. (to be checked)

- For books and articles, I think we need something more strucured, like
BibTeX, in order to allow for, say, more scholarly usage. The problem is
that it is not 100% obvious how to represent bibtex in RDF, look at my
recent blog and the comments[2]. We may have to byte the bullet and
choose one or modify one).

[As an aside, it was one of you guys, I think, who drew my attention on
BibSonomy[3] which uses nice features to store bibliographical data as
well, it is a pity that the bibtex they use is broken[2] otherwise we
could have used it)

- I was looking at DOAP; its description on [4] refers to "DOAP is a
project to create an XML/RDF vocabulary to describe open source
projects." I was wondering whether it would also be suitable to describe
non-commercial projects, ie, where the 'open sourceness' is in DOAP.
Sure, there are references to repositories and copyrights, but I presume
it is all right to ignore those when we talk about commercial projects.
To be checked, nevertheless...

- Whether the core 'glue', binding all that together, should be SIOC, as
Kingsley proposes, or something else, I am not sure. I must admit I am
not familiar with all the details of SIOC in this sense. I am a little
bit afraid (just like for RSS) to reuse something just because some of
the properties and classes are around that are close to what we want,
but it is not *really* meant for that. I know there is a fuzzy line
there, and may not apply to SIOC (as I said, I am not sure about that
one), but we should be careful about that.

I am sure other issues will pop up...

Ivan


[1] http://dublincore.org/documents/dcmi-type-vocabulary/
[2] http://ivanherman.wordpress.com/2007/01/13/bibtex-in-rdf/
[3] http://www.bibsonomy.org
[4] http://usefulinc.com/doap/


Leo Sauermann wrote:
> Hi Guys,
> 
> perhaps read the wiki-page in parallel to this email thread.
> DOAP, FOAF, etc are all mentioned there already,
> http://esw.w3.org/topic/SweoIG/TaskForces/InfoGathering/DataVocabulary
> 
> Benjamin, Ivan, you are free to edit the wiki page,
> just change/adapt it so that it reflects your approach, please start
> editing.
> (no edits so far,
> this is a wiki, free speech, last change wins, anything goes, like
> wikipedia)
> 
> 
> Es begab sich aber da Benjamin Nowack zur rechten Zeit 26.02.2007 11:24
> folgendes schrieb:
> 
>>On 22.02.2007 19:55:52, Leo Sauermann wrote:
>>[...]
>>  
>>
>>>I see two things to face, first:
>>>Describing Information items as such, such as tools, websites, 
>>>presentaitons, tutorials. This should be done using RSS 1.0, and in some 
>>>cases when needed extended using DOAP, foaf, etc. This is pretty 
>>>straightforward, please review and update this site until you agree:
>>>http://esw.w3.org/topic/SweoIG/TaskForces/InfoGathering/DataVocabulary
>>>    
>>>
>>Not sure about the RSS design decision, it pretty much restricts
>>the resource types to documents, so we can't really use it as an
>>"umbrella" spec. My 2 highly redundant cents:
>>- I found DOAP to work fine for most things software, DCMI provides a 
>>  number of handy resource type URIs[1] which could be used to augment
>>  doap:Version resources (e.g. dctype:Collection, dctype:Dataset,
>>  dctype:InteractiveResource, dctype:Service), or owl:Ontology for
>>  projects that produce vocabularies (e.g. the FOAF project)
>>  
>>
> That was partly already there,
> please edit the wiki page so that it reflects your exact ideas, but I
> think the current version already is like you say here.
> 
> 
>>- tags (skos:subject, or dc:subject) for more specific stuff (personal
>>  preference: the more fine-grained skos options)
>>  
>>
> ok, one more for SKOS
> 
>>- Danny's review vocab[2] for ratings/reviews
>>  
>>
> please add this to the wiki page!
> 
>>- a combination of the two rdf/iCal specs[3][4] (with and without
>>  timezone-datatyped timestamps) for events
>>  
>>
> they are rather buggy and not clear which one to use, but I would go for
> the simpler (not-timezone-as-datatype-one).
> 
> 
> 
> Es begab sich aber da Danny Ayers zur rechten Zeit 22.02.2007 20:25
> folgendes schrieb:
> 
>>
>> Quick thoughts: I see the motivation re. reuse, but rather than trying
>> to use solely RSS 1.0 for the items, it might be better to use more
>> precise terms where they exist, as_well_as the RSS terms, e.g.
>>
>> <http://example.org/doc> a rss:item; a foaf:Document .
> 
> I also thought about this, but if you require from all participants to
> do that, it sucks.
> Why should anyone annotate two types if one is enough? This is the
> format we expect external data to be in,
> inference should add the additional triples.
> 
>>
>> For the taxo stuff, SKOS sounds a very good idea generally, though I
>> wouldn't be surprised if there were existing vocabs that could be used
>> for things like "tutorial" etc.
>> I'll cc Ian, he hangs around libraries...
>>
>> It might also be worth considering (perhaps redundantly again) the Tag
>> Ontology at
>> http://www.holygoat.co.uk/projects/tags/
> 
> SKOS covers this and more, so would rather use skos.
> 
>>
>> Cheers,
>> Danny.
>>
>>
>>
> 
> 
> -- 
> ____________________________________________________
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> 
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-- 

Ivan Herman, W3C Semantic Web Activity Lead
URL: http://www.w3.org/People/Ivan/
PGP Key: http://www.cwi.nl/%7Eivan/AboutMe/pgpkey.html
FOAF: http://www.ivan-herman.net/foaf.rdf

Received on Wednesday, 28 February 2007 12:17:04 GMT

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