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V 0.5 of Veudas Web RDF Editor is out

From: Phil Dawes <pdawes@users.sourceforge.net>
Date: Fri, 16 Jul 2004 17:02:59 +0000
Message-ID: <16632.2627.245998.522182@gargle.gargle.HOWL>
To: www-rdf-interest@w3.org

Hi RDF Interest,

I'm like to announce the latest beta of veudas - my experimental web
rdf browsing and editing tool.

This release is basically a complete rewrite of the tool. The biggest
differences are:

- Architecture is now python cgi + javascript
- Supports a 'merged view' from multiple rdf stores
- New editing functionality enables ad-hoc creation of simple owl
ontology on-the-fly as you enter instance data

In this release, Veudas does its best to abstract the mechanics of
URIs from the user; in particular, it uses rdfs:labels and rdf:types
to identify and display resources, and automatically generates URIs as
the user enters data. For 'instance' resources (i.e. not classes) this
is a done using an opaque random hash added to the configured
namespace. For classes and properties this is a constructed URI based
on the label given to the resource.

When adding properties to resources, veudas generates owl local
property restrictions. My experience at work was that global
restrictions like rdfs:range and rdfs:domain quickly became
restrictive when handling hetrogenious data from lots of places.

This release also debuts the ability to have a merged view of data
from multiple repositories - one writable store and many readonly
sources (number subject to performance). This is to enable effective
linking of local data with global ontologies and resources. E.g. a
team within a company can link their local data with that of a global
company-wide repository. This networked-linking of data is the killer
feature of RDF for me, and I want veudas to be able to exploit it.

A (slow) online file-based demo of veudas can be found at:

The software can be downloaded from:

N.B. because of problems with handling bnodes in joseki (joseki can't
delete them), veudas doesn't work 100% when using this store for
editing. I'm hoping this will be fixed soon.

I'd appreciate any comments, feedback and ideas for improvement.


Received on Friday, 16 July 2004 12:06:17 UTC

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