[dady] Dataset Dynamics meet-up at WWW2010

[Michael Hausenblas]

All,

Changes in Linked Data sources (dataset dynamics) and how to deal with it
are an important and emerging issue [1][2].

As already mentioned, there will be a dataset dynamics meet-up at WWW2010. I
first planned to register a BoF, but it is still unclear if this is possible
[3].

I'd now propose to have a break-out session at the W3C LOD Track [4] - as I
won't be able to make it to WWW, Juergen Umbrich (in CC) would take care of
the local organisation.

Cheers,
Michael

[1] http://esw.w3.org/DatasetDynamics
[2]
http://data-gov.tw.rpi.edu/wiki/TWC_Data-gov_Vocabulary_Proposal#Change_of_d
ataset
[3] http://twitter.com/WWW2010/status/12452736301
[4] http://esw.w3.org/Camps:LODCampW3CTrack#breakout

--
Dr. Michael Hausenblas
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html




--
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[Sandro Hawke]

> Changes in Linked Data sources (dataset dynamics) and how to deal with it
> are an important and emerging issue [1][2].
>
> As already mentioned, there will be a dataset dynamics meet-up at WWW2010. I
> first planned to register a BoF, but it is still unclear if this is possible
> [3].
>
> I'd now propose to have a break-out session at the W3C LOD Track [4] - as I
> won't be able to make it to WWW, Juergen Umbrich (in CC) would take care of
> the local organisation.

Sounds like a good idea, although I don't know what else might be on the
menu.

So, I just learned of the "dataset dynamics" term and community last
week (from Michael), but I've been thinking about this for many years.
I got inspired and sketched out a design a few months ago, which I think
is pretty good. I've been hoping to return to it some day soon, but if
we're talking about this Thursday, I might was well share the drafts
now.

I think for the use cases I have in mind (large scale, ad hoc, real-time
mirroring of RDF), a key requirement is constant time (per triple) to
apply deltas, including maintaining a secure hash. I was happy to see I
could (I think) meet this with some tweaking of blank nodes. I sketched
both a delta format (gruf) and a subscription protocol (websub), which
are separate.

Rough specs are here:
http://websub.org/wiki/GRUF
http://websub.org/wiki/Spec

-- Sandro

[Michael Hausenblas]

Sandro,

(funny, I posted this last Friday and it showed up only yesterday ...)

> I think for the use cases I have in mind (large scale, ad hoc, real-time
> mirroring of RDF), a key requirement is constant time (per triple) to
> apply deltas, including maintaining a secure hash. I was happy to see I
> could (I think) meet this with some tweaking of blank nodes. I sketched
> both a delta format (gruf) and a subscription protocol (websub), which
> are separate.
>
> Rough specs are here:
> http://websub.org/wiki/GRUF
> http://websub.org/wiki/Spec

This looks great, thanks! It would be interesting to learn more about the
status of this project (are implementations available, etc.) and your plans
with it.

Indeed, as I recently wrote [1], there are plenty of approaches and
proposals out there and I think the time is ripe to sit together, get more
practical experience in implementing and deploying stuff.

I hope you can make it to the Dataset Dynamics meeting [2] and introduce
your proposal to the community. I'll sync with Juergen to catch up.

Cheers,
Michael

[1] http://blog.semantic-web.at/2010/04/26/a-dynamic-web-of-data/
[2] http://esw.w3.org/DatasetDynamics/Meetings

--
Dr. Michael Hausenblas
LiDRC - Linked Data Research Centre
DERI - Digital Enterprise Research Institute
NUIG - National University of Ireland, Galway
Ireland, Europe
Tel. +353 91 495730
http://linkeddata.deri.ie/
http://sw-app.org/about.html