The issue of dataset dynamics for linked data data sets was discussed
at the LDOW workshop at last years WWW conference. The impression that
I got was that it is something that is obviously needed, but the
problem is still being defined - along with intial solutions.
As one might expect there are a myriad of proposals for capturing this
metadata:
http://www.w3.org/wiki/DatasetDynamics
Best,
Matthew
Matthew Gamble
School of Computer Science
University of Manchester
Kilburn Building
Oxford Road
Manchester
M13 9PL
United Kingdom
On 4 Mar 2011, at 17:17, Andrea Splendiani wrote:
Hi,
I've recently seen a post on the w3c mailing list which points to a
very
useful resource:
http://labs.mondeca.com/sparqlEndpointsStatus/index.html
(it's a bit incomplete on the bio side... perhaps not many people
used ckan
in this area?).
I was wondering that for a resource like that to be really useful in
research, we would need an extra information: how fresh the
information is.
Do you know if there is any standard metadata to indicate the last
refresh
of the endpoint content ?
Technically speaking this kind of information should be associated
to data
as provenance. In practice however, 90% of utility can be reached
by having
some state information for each big graph in the endpoint,
corresponding to
major data sources.
In practice it would be nice to have a standard dictionary so that
we can
ask to the triplestore:
list of graphs/datasets.
for each of these (or for endpoint itself if this holds information
which is
coherent source-wise):
- update frequency
- last update
- data source (type and in case link).
Does anybody have this already ? Opinions ?
best,
Andrea
Andrea Splendiani
Senior Bioinformatics Scientist
Centre for Mathematical and Computational Biology
+44(0)1582 763133 ext 2004
andrea.splendi...@bbsrc.ac.uk
