Rafal Kicinger Collection
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Browsing Rafal Kicinger Collection by Author "Popovici, Elena"
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Item George Mason University Intelligent Educator(Millpress Science Publishers, 2003) Oguejiofor, Emeka; Kicinger, Rafal P.; Popovici, Elena; Arciszewski, Tomasz; De Jong, Kenneth A.Engineering education is undergoing significant changes, mostly driven by the ongoing Information Technology Revolution. One of the most promising technologies becoming available to educators is that of intelligent software agents. Such agents can be used in building tutoring systems, which in this way become intelligent in terms of knowledge content, their ability to learn (acquire knowledge), and to adapt to the needs and learning preferences of their users. The paper discusses the development of a prototype intelligent tutoring system, called "George Mason University Intelligent Educator." It has been built as a result of a complex process in which various software development tools have been used in a novel way, including ConceptMap, Protégé2000, Macromedia Flash and JRun. The reported research is part of a NASA-sponsored project in the area of engineering education called "Hierarchical Learning Network" and is coordinated by the Old Dominion University in Virginia. The primary objective of the research at George Mason University is to develop a methodology for building intelligent tutoring systems and to demonstrate its feasibility. First, the paper provides a brief description of the process that was used for knowledge acquisition and its representation in the form of an ontology. The description includes examples from the area of personal air vehicles. Next, the development process for the proposed intelligent tutoring system is presented, along with a discussion of the integration of various software development tools. Finally, the initial research conclusions and plans for further research are discussed.Item Intelligent tutoring systems: An ontology-based approach(2004) Oguejiofor, Emeka; Kicinger, Rafal P.; Popovici, Elena; Arciszewski, Tomasz; De Jong, Kenneth A.A novel methodology for building tutoring system is proposed. It includes the integration of state of the art computer science methods and tools and the use of an ontology for the core knowledge representation. First, the paper presents the ongoing Information Technology revolution in engineering and the related paradigm changes in education. Next, an overview of the concept of an ontology and its various definitions are provided, along with available ontology development tools. In the following section, an architecture of an ontology-based tutoring system is proposed. As a proof of concept, the proposed architecture has been used in GMU Educator, an intelligent tutoring system developed at George Mason University in the School of Information Technology and Engineering. A detailed description of the GMU Educator is then presented with various examples. Finally, conclusions and plans for further research are provided in the last section of the paper.