QuEST Weekly Meeting, November 13th 2009

QUEST Topics Nov 13, 2009:

We are pleased to have Dr. Mieczyslaw (Mitch) Kokar join us for our weekly QuEST roundtable this week.  Dr. Kokar is the President of VIStology Inc, and an associate professor at Northeastern University.  His work on Information Fusion and ontologies has been the focus of several past discussions in the QuEST group, and we are very excited to have him in-house this week to lend us his insight.

Topic 1 will consist of a discussion hosted by Dr. Kokar, please see the abstract provided below for the subject material.  We will try to post slides of this material if available for anyone not on-site.

Topic 2 on the agenda will be a short QuEST overview talk from our side to not only attempt to provide Dr. Kokar with a better perspective of the QuEST point of view but also to practice our ‘elevator story’ for newly engaging parties.

Formalization of Context and Situation Awareness

Mieczyslaw M. Kokar

Department of Electrical and Computer Engineering

Northeastern University

360 Huntington Avenue

Boston, MA 02115

 

kokar@coe.neu.edu http://www.ece.neu.edu/groups/scs/kokar/

This talk will provide a brief overview of ways to formalize the notion of “context”. One of the advantages of formalization is that inference engines can then be used to infer (automatically) what holds and what not in a given context. One way to understand context is to equate it with situation. This leads then to the question of how to formalize and automate reasoning about situations. A brief overview of the Situation Theory Ontology (STO) will be given. Since this ontology is expressed in OWL (Web Ontology Language), formal inference can be carried out using OWL reasoners. However, reasoning “in a context” requires integration of explicitly stated knowledge with the context. This leads to the problem of ontology integration. On the practical side, an attempt to capture context in reasoning about battlefield intelligence and enemy courses of action will be briefly discussed.

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