W3C home > Mailing lists > Public > public-lod@w3.org > April 2010

Re: What would you build with a web of data?

From: Olaf Hartig <hartig@informatik.hu-berlin.de>
Date: Mon, 12 Apr 2010 20:15:53 +0200
To: "public-lod" <public-lod@w3.org>
Message-Id: <201004122015.55049.hartig@informatik.hu-berlin.de>
On Monday 12 April 2010 16:14:56 Georgi Kobilarov wrote:
> [...]
> So after your work on SQUIN, what is your conclusion? Does the distributed
> querying approach work well enough that you can imagine a developer
>  building an application/website using it?

First of all, the query approach implemented by SQUIN and the underlying 
Semantic Web Client library (SWClLib) is very different from distributed query 
processing. I call this new approach link traversal based query execution.

Re your question: building an application based on this query approach is very 
easy, in particular, if you use a tool like SQUIN that can be accessed as if 
it were a SPARQL endpoint. What might be a bit tricky for beginners is the 
development of the queries.

We implemented two real LD based application using SQUIN:
* http://researchersmap.informatik.hu-berlin.de/
* http://linkeddata.informatik.hu-berlin.de/altmed/
These applications, indeed, use Linked Data from multiple sources.

> An application for users who have no appreciation for the underlying
> technology at all and hence no tolerance for hickups cause by it?

That's a different story. SQUIN and SWClLib are prototypes that don't work very 
efficiently and that still lack several features. Hence, I wouldn't recommend 
them for real applications that require UI-friendly response times, yet.
However, the query approach in general, implemented with suitable caching 
mechanisms, can serve specific LD based applications quite well.

Greetings,
Olaf
Received on Monday, 12 April 2010 18:16:30 UTC

This archive was generated by hypermail 2.3.1 : Sunday, 31 March 2013 14:24:26 UTC