Abstract

Abstract: Based on the research of [Stil 1998] [Maurer 1992] [Lennon 1994] [Elliot 1995] [Colbourn 1995] [Reeves 1997] [Lugner 1997], the application of an expert system as an interactive multimedia knowledge module with explanation features named Virtual Tutor (VT) was developed. For students, the individual dialogue based session with the VT, provides the possibility to apply the knowledge acquired in combination with indirect assessment. The VT was further embedded in the Web-based on-line learning environment. The reported research merges qualities of an expert system with advantages of multimedia, thus creating a variety of innovative ways of knowledge mediation.

Based on the evaluation results the conclusion can be drawn that dialog based system meets more accurate the requirements of the students in case of solving problems. Problem solution can be found easier and faster than using conventional literature. The possibility of accessing additional information related to the subject domain and explanation on request, VT is an interesting and different tool for knowledge transfer.