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
