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Re: [Ann] WebVOWL 0.3 - Visualize your ontology on the web

From: John Walker <john.walker@semaku.com>
Date: Fri, 9 Jan 2015 11:59:24 +0100 (CET)
To: Steffen Lohmann <steffen.lohmann@vis.uni-stuttgart.de>
Cc: "public-lod@w3.org" <public-lod@w3.org>
Message-ID: <357269016.2777235.1420801164699.open-xchange@oxweb03.eigbox.net>
Hi Steffen,

I see under Selection Details that there is a count of instances when a class is
selected.

Is there any option to show other otherwise enumerate the instances of a class?
Maybe showing the instances in the graph might clutter things up (could add a
filter for this), but simply adding a list of links under Selection Details
would be a good start.

This would be useful if the ontology contains, for example, code lists.

John

> On January 9, 2015 at 11:12 AM Steffen Lohmann
> <steffen.lohmann@vis.uni-stuttgart.de> wrote:
>
>
> On 05.01.2015 16:29, Stian Soiland-Reyes wrote:
> > This is great stuff!
>
> Thank you, Stian. We are glad to hear that.
>
> > I tried it with my ontology PAV - and it seems it is struggling a bit
> > because PAV (deliberately) don't have a defined domain and range on
> > object properties:
> >
> > http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/pav/
> >
> > Hence everything goes from and to Thing in the centre, which makes it
> > a bit clotted - I could not use the "Gravity" setting to space out the
> > properties.
> >
> > In our manually made diagram I show this using additional "vague"
> > resource boxes - perhaps each "unbound" property could just get an
> > empty dotted box on the outside instead of going back to Thing?
> >
> > http://pav-ontology.googlecode.com/svn/trunk/images/pav-overview.png
>
> If there is a large set of properties without domain and range axioms in
> an ontology, the current WebVOWL rendering is indeed not perfect. Your
> PAV ontology is a good example for this. We will think about possible
> alternatives to adapt or extend the splitting rules of VOWL 2 -
> http://vowl.visualdataweb.org/v2/#splittingRules .
>
> > Here's a nice view that I liked, using PROV-O
> >
> > http://vowl.visualdataweb.org/webvowl/#iri=http://www.w3.org/ns/prov-o
>
> The visualization is nice but not 100% complete yet, as the current
> WebVOWL implementation does not render properties with multiple domain
> or range axioms properly at the moment (e.g., the property "hadActivity"
> has more than one domain). We are working on that issue and it will
> likely be resolved in the next WebVOWL release.
>
> > Is it possible to turn off the "Subclass of" label and only show the line?
>
> Several people asked for that already, so we plan to include some kind
> of "expert mode" with a "reduced notation" in the next WebVOWL release.
> However, we do not want to remove that label from the initial
> visualization, as it clarifies the direction of the subclass relation
> and is important to make VOWL understandable to casual users, as we
> found out in our evaluations - see our papers on VOWL linked at
> http://vowl.visualdataweb.org/v2/#references
>
> > Would it be possible to save a link to a particular view (without
> > having to save the SVG)? That navigation state fits much better in
> > the # parameters than the iri= I would belive.
>
> This is a tricky question, as it would require to save the node
> positions of the VOWL graph in an annotated JSON or the like. The
> current VOWL-JSON is not optimized for that, but we may incorporate such
> a feature in one of the next releases (though I cannot promise).
>
> > I know it's not a proper ontology - yet people still like it for some
> > reason. Here however it fails with "Ontology could not be loaded.
> > Conversion failed. "
> >
> > http://vowl.visualdataweb.org/webvowl/#iri=http://purl.org/dc/terms/
>
> This is because the vocabulary misses some OWL constructs that are
> expected by WebVOWL (e.g., an ontology IRI). We will try to fix it and
> also allow the parsing of such RDFS vocabularies in the next WebVOWL
> release.
>
> Many thanks again for your feedback - very useful,
> Steffen
>
>
> > On 19 December 2014 at 15:49, Steffen Lohmann
> > <steffen.lohmann@vis.uni-stuttgart.de> wrote:
> >> Hi all,
> >>
> >> we are glad to announce the release of WebVOWL 0.3, which integrates our
> >> OWL2VOWL converter now. WebVOWL works in modern web browsers without any
> >> installation so that ontologies can be instantly visualized. Check it out
> >> at:http://vowl.visualdataweb.org/webvowl.html
> >>
> >> To the best of our knowledge, WebVOWL is the first comprehensive ontology
> >> visualization completely based on open web standards (HTML, SVG, CSS,
> >> JavaScript). It implements VOWL 2, which has been designed in a
> >> user-oriented process and is clearly specified at
> >> http://vowl.visualdataweb.org (incl. references to scientific papers).
> >>
> >> Please note that:
> >> - WebVOWL is a tool for ontology visualization, not for ontology modeling.
> >> - VOWL considers many language constructs of OWL but not all of them yet.
> >> - VOWL focuses on the visualization of the TBox of small to medium-size
> >> ontologies but does not sufficiently support the visualization of very
> >> large
> >> ontologies and detailed ABox information for the time being.
> >> - WebVOWL 0.3 implements the VOWL 2 specification nearly completely, but
> >> the
> >> current version of the OWL2VOWL converter does not.
> >> These issues are subject to future work.
> >>
> >> Have fun with it!
> >>
> >> On behalf of the VOWL team,
> >> Steffen
> >>
> >> --
> >> Dr. Steffen Lohmann . Visualization and Interactive Systems (VIS)
> >> University of Stuttgart . Universitaetstrasse 38 . D-70569 Stuttgart
> >> Phone: +49 711 685-88438 .http://www.vis.uni-stuttgart.de/~lohmansn
> >>
>
>
Received on Friday, 9 January 2015 10:59:51 UTC

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