Hi, very nice! I have a small suggestion: why don't you ask "count(*) where {?s ?p ?o}" to the endpoint ? Or ask for the number of graphs ? Both information, number of triples and number of graphs, if logged and compared over time, can give a practical view of the liveliness of the content of the endpoint.
best, Andrea Splendiani Il giorno 28/feb/2011, alle ore 18.55, Pierre-Yves Vandenbussche ha scritto: > Hello all, > > you have already encountered problems of SPARQL endpoint accessibility ? > you feel frustrated they are never available when you need them? > you develop an application using these services but wonder if it is reliable? > > Here is a tool [1] that allows you to know public SPARQL endpoints > availability and monitor them in the last hours/days. > Stay informed of a particular (or all) endpoint status changes through RSS > feeds. > All availability information generated by this tool is accessible through a > SPARQL endpoint. > > This tool fetches public SPARQL endpoints from CKAN open data. From this > list, it runs tests every hour for availability. > > [1] http://labs.mondeca.com/sparqlEndpointsStatus/index.html > [2] http://ckan.net/ > > Pierre-Yves Vandenbussche. Andrea Splendiani Senior Bioinformatics Scientist Centre for Mathematical and Computational Biology +44(0)1582 763133 ext 2004 andrea.splendi...@bbsrc.ac.uk