Design And Realization Of Intelligent Examination System Based On Local Area Network

More and more people enter school or take an examination in order to improve his literacy and professional ability with the development of society. The type and request of test ceaselessly increase. The workloads of teacher become more and more. Now there are some subjective operational examinations, such as computer grade exam and the title of a technical post exam. It is difficult to grade objectively and equitably by traditional test mode. So the traditional test has not adapted the demand of modern test.In this article we research the design and realization of intelligent examination system based on network in order to improve educational management efficiency and explore the accurately and fleetly automatic grade of subjective examination. The system is based on C/S model. It is a perfect project of test system based on local area network. Adopt RUP idea to improve the scalability and reusability. In this article we design a method of automatically grade based on feature extraction. This method comes from pattern matching idea, and then we can get all kinds of test information and grade operational test questions automatically. We especially design the intelligent generating test paper method by genetic algorithm and make it content generating tests paper. Furthermore we improve the genetic algorithm. The system provides good security in the fashion of multilevel authorized system and use encryption algorithm to encrypt data to guarantee the system security at the same time. Furthermore we resolve large numbers of exception which can influence test course by largely test. The method of operational test questions automatically grade based on feature extraction and the intelligent generating test paper method is the amelioration of previous test system.With this system, we can expand the flexibility of test. Test paper can be produced by intelligent arithmetic, so it can prevent examinees from guessing the test questions before examination and decrease the possibility of cheat. Test paper should be automatic graded by feature extraction in order to increase the computer efficiency, improve validity and objectivity. In the system, grades are encrypted and send to data manage center by interface in order to implement seamless link.