HP have set up this site to enable anyone who wishes to assist with our research into provenance and versioning of Semantic Web data to contribute such public data for
While we are grateful for all contributions, we cannot make any warranties whatsoever regarding any aspect of our storage of your data in this way. Thus, before placing your data on this site, please make sure that you are aware of, and agree to, the following:
GVS allows persistent storage of RDF graphs, keeping track of provenance (which source supplied the statements) and history (which statements were added to/removed from the graph and when). Retrievals can specify unions over multiple sources and points in time.
An instance of GVS is usable directly through it's Java API, remotely through a RESTfull HTTP interface, or using an AJAX Web-Application.
GVS is experimental software intended for research purposes as part of the Jena family.
Basing on the concept of RDF Molecules GVS splits every graph into components. A metamodel contains the information about which source is asserting which component during which periods.
You can check out the module 'gvs' from the CVS repository at :pserver:anonymous@jena.cvs.sourceforge.net:/cvsroot/jena. More information on how to access the CVS repository can be found here.
This site hosts a public GVS-Store. You can open an account and become a source. Accounts are weakly password-protected.
If you forgot your password or want to change it, reopen the account: if your username and email match the existing account, the password will be reset after you click on the confirmation link sent by email.
Questions can be sent to the Jena-Dev Mailing list with subject starting with [GVS] or directly to Chris Dollin and to Reto Bachmann-Gmür.