W3C home > Mailing lists > Public > public-rdf-wg@w3.org > September 2012

Re: Scope of blank node labels in TriG/N-Quads

From: Sandro Hawke <sandro@w3.org>
Date: Wed, 05 Sep 2012 23:21:02 -0400
Message-ID: <5048169E.7010601@w3.org>
To: public-rdf-wg@w3.org
On 09/05/2012 01:36 PM, Richard Cyganiak wrote:
> (I'm making a separate thread for this as it is *only* about the scope of blank node labels in the multigraph syntaxes, and *not* about sharing blank nodes in the abstract syntax. Writing this is my ACTION-183.)
>
> In today's call, two use cases for document-scope blank node labels in multigraph syntaxes were offered, and I was asked how to address them.
>
> First, backups/restores of graph stores. This can be addressed using skolem IRIs.

What if the graph store already has both Skolem IRI nodes (acquired from 
Web crawling) and blank nodes?   How can you make the backup/restore 
faithful?

> Second, separation of inference [1]. This doesn't require sharing of blank nodes in surface syntaxes, but only *within* a store, so it's not relevant here.

Why is that only within a store?      Alice has some data, does some 
inference, tracks that in some provenance, gives the resulting dataset 
to Bob for display/additional-processing/analysis.     Alice gives the 
data to Bob as a TriG file.

    -- Sandro

> Best,
> Richard
>
>
> [1] http://www.w3.org/2011/rdf-wg/wiki/Why_Graphs#Separation_of_Inference
>
Received on Thursday, 6 September 2012 03:21:08 GMT

This archive was generated by hypermail 2.3.1 : Tuesday, 26 March 2013 16:25:51 GMT