[topicmapmail] TM visualisation
Jens Kanschik
jens_kanschik@freenet.de
Sun, 11 Apr 2004 16:37:23 +0200
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Hello everybody,
I just extended the hypergraph homepage with a section about tm =
visualisation (http://hypergraph.sourceforge.net/example_tm.html). I use =
the hyperbolic visualisation technique of hypergraph together with =
Stefan Lischke's TinyTIM engine to show a simplified graph structure of =
a whole topicmap.
What I aim at, is to give a user an overview of the whole topicmap, =
which is of course difficult because of the sheer size of some =
topicmaps. I tried to reduced the number of nodes / edges by selecting =
only a subset of topics and simplifying associations, because I think =
that most users are irritated when the whole graph structure of a =
topicmap is shown.
For example I present binary associations with one single edge, i.e. I =
don't show the roles / instances of a association. Of course I use them =
to label the edge, but they are not part of the graph itself. The same =
applies for instances, which are not presented as edges.
The resulting graph sometimes contains several connected components. =
These components are fairly easy to spot with the used layout and it =
might be a good indicator that a topic map needs contains some parts =
that are never looked at by the user because they are not connected via =
associations to the rest of the map.=20
I would be glad if you could try it out and give comments.
Regards,
Jens Kanschik.
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<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hello everybody,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I just extended the hypergraph homepage =
with a=20
section about tm visualisation (<A=20
href=3D"http://hypergraph.sourceforge.net/example_tm.html">http://hypergr=
aph.sourceforge.net/example_tm.html</A>).=20
I use the hyperbolic visualisation technique of hypergraph together with =
Stefan=20
Lischke's TinyTIM engine to show a simplified graph structure of a whole =
topicmap.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>What I aim at, is to give a user an =
overview of the=20
whole topicmap, which is of course difficult because of the sheer size =
of some=20
topicmaps. I tried to reduced the number of nodes / edges by selecting =
only a=20
subset of topics and simplifying associations, because I think that most =
users=20
are irritated when the whole graph structure of a topicmap is=20
shown.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>For example I present binary =
associations with one=20
single edge, i.e. I don't show the roles / instances of a association. =
Of course=20
I use them to label the edge, but they are not part of the graph itself. =
The=20
same applies for instances, which are not presented as =
edges.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>The resulting graph sometimes contains =
several=20
connected components. These components are fairly easy to spot with the =
used=20
layout and it might be a good indicator that a topic map needs contains =
some=20
parts that are never looked at by the user because they are not =
connected via=20
associations to the rest of the map. </FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I would be glad if you could try it out =
and give=20
comments.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Regards,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Jens =
Kanschik.</FONT></DIV></BODY></HTML>
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