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the IMT, which can model the dynamic knowledge of an industrial domain. Dyna can be used
in conjunction with Protégé, which models the static knowledge. When the two tools are used
together, they can represent the static and dynamic knowledge of most industrial domains.
Fig. 1. High-level architecture of Onto3DViz
While Dyna (Harrison & Chan, 2009) can support ontology modeling, its capability for
supporting ontology visualization is limited. Onto3DViz addresses this limitation and has
been developed for visualizing an application ontology in 3D graphics. It is written in the
Java™ language and its 3D visualization engine is implemented in Java 3D™. Onto3DViz
differs from other ontology visualization tools in two ways: (1) it is a visualization tool
developed based on the IMT (Chan, 2004), and (2) it supports visualization of both static and
dynamic knowledge models specified according to the IMT. As well, Onto3DViz requires
supports knowledge sharing and re-use. Unlike Dyna which has been implemented as a
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