关键词:粗糙集理论; 考试系统; 安全技术; 系统调用
Secure examination system based on rough set theory
ZHANG Ping , WANG Jian-zhong, WU Qian, ZOU Fan, GAO Yi
(College of Fundamental Education, Sichuan Normal University, Chengdu 610068, China)
Abstract:Applied the traditional information secure technology and the rough set theory to the computer examination system in order to improve the system security. This paper proposed an effective method based on rough set theory which had low overhead and high efficiency, and used to monitor the abnormal behavior of processes. It extracted a set of detection rules with minimum size to form a normal behavior model from the record of system call sequences and could detect the abnormal operating status of a process. Compared with the old system, this method required a smaller size of training data set, less efforts to collect training data and more suitable for real-time detection. Experimental results show that the secure performance of this system is better than the old system’s. ......