Dear Michael,

Dear Michael,

thanks for your very valuable comments and pointers!

Am 05.05.2011 um 10:34 schrieb Michael Hausenblas:

> 
> Sebastian,
> 
> Good stuff and timely, indeed. Can you please tell me, how this relates to 
> TimBL's notes [1] [2] (if it does)?

It certainly relates to [1] and [2], where TBL suggests using PUT for 
write-back of data. But TBL's notes are on a more abstract level while we have 
been working on a concrete realisation of these ideas by combining two widely 
accepted approaches (Linked Data and REST).

> 
> I'm especially interested in the following:
> 
> + How exactly is SPARQL utilised in your proposal? See also [3] and [4] for 
> related work.

The concept I describe is completely decoupled from SPARQL and focusses on the 
resource management itself. Of course we are also considering SPARQL (for 
querying and for updating) but this is a separate extension that is 
complementary (like SPARQL endpoints are complementary to Linked Data). 
However, in the mail I sent to the list I first wanted to concentrate on the 
issue where we have spent most work on.


> + How is authentication and authorisation handled (like WebID [5] and WAC 
> [6])?

Since we are an applied research centre, we want to be standards-based as far 
as possible. There are actually two separate issues you are suggesting here. 
Authentication and authorisation. The authentication we are working on will be 
based on OAuth2, and we already have an experimental implementation for that. 
For authorisation we are planning to use access control lists in some form, but 
this is not really thought through yet- The proposal in [6] looks promising for 
access control lists.



> 
> Cheers,
>       Michael
> [1] http://www.w3.org/DesignIssues/ReadWriteLinkedData.html
> [2] http://www.w3.org/DesignIssues/CloudStorage.html
> [3] http://www.w3.org/TR/sparql11-http-rdf-update/
> [4] http://portal.acm.org/citation.cfm?id=1645412
> [5] http://www.w3.org/2005/Incubator/webid/spec/
> [6] http://www.w3.org/wiki/WebAccessControl
> --

Greetings,

Sebastian
-- 
| Dr. Sebastian Schaffert          [email protected]
| Salzburg Research Forschungsgesellschaft  http://www.salzburgresearch.at
| Head of Knowledge and Media Technologies Group          +43 662 2288 423
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