The Design And Implemention Of Inteligent Tutor And Marking System For Circuit-Based Virtual Experiment

Nowadays, virtual experiment is gradually becoming an important method and complement to distance education. However, on the one hand, due to the limitations of space, students can't get the experiment tutor info in time when they have some difficulties, on the other hand, the large number of students involved in make the marking tasks become a burdens on teachers, which forming a bottleneck of the virtual experiment performance.Deriving from the analysis on the existed virtual experiment system in computer network courses, this paper discovers detailed defects and the improvements needed to be solved. As a result, intelligent marking and tutor functions of circuit-based virtual experiment systems are designed and implemented, which would overcome the problems caused by the marking and tutor rules'dependencies upon the experimental equipment warehouse, and improve the rules'formulating methodologies. Besides, the proposed system has not only featured in the generality of circuit-based virtual experiment solution providing, but also achieved its innovation points due to its humane design during the operation of formulating marking and tutor rules.Using the open-source framework of J2EE technology as its entire architecture, this system introduces the rule-based expert system, known as the rules engine technology, to separate the marking and tutor rules with the virtual experiment data, and the rules generated from the expert system are scalable. As for the aspect of intelligent marking, this system creates a concept of "marking point library" as a measurement of the marking standard. Note that the combination of these "marking points" could form into new marking rules, which would ensure the flexibility and usability to the marking rules'formulation. On the other hand, "rule flow" technology is introduced to ensure the system capability of delivering the feedbacks in batches from the intelligent tutoring procedure, improving the total intellectuality of the system.This paper has designed and implemented the circuit-based virtual experiment intelligent tutor and marking system. The clear and delicate framework design enables the system a flexible scalability and a stable performance through the practical tests and verifications, which has proved the feasibility and correctness of the system architecture and the application of relevant technologies.