Military Communications and Information Technology: A Trusted ...

246 Military Communications and Information Technology...
Figure 4 Properties of InsigmaEvent class
IEO, based on T-Box and A-Box statements, classifies event source to one
of the following types of event:
• Road Accident,
• Traffic Collision,
• Traffic Difficulties,
• Weather Difficulties.
Classifying and inferring knowledge is provided by the RM described
in the next chapter.
V. Reasoning Module
A. Architecture
The RM is one of the parts of ENS. It holds whole “logic” and decides about
the type of event and necessary actions to be triggered. The knowledge inferred on
the basis of the T-Box and A-Box ontology statements is used by the ENS dispatching
module to send appropriate notifications.
RM was implemented in Java as a Web Service. This implementation uses
the following tools and libraries:
• Protege-owl-3.4.6 – ontology development and modeling tool,
• Pellet 2.2.2 –OWL reasoner provides reasoning services for OWL ontologies
[11],
• Jess71p2 – rule engine for the Java platform [12],
• Glassfish 2.x – application server for the Java EE platform.
Ontology development was done using Protégé 3.6.4 with OWL 1.0. We decided
to use the older version of Protégé due to the fact that the newest version (4.2) did