Design And Implement Of Online Work And Testing System Based On Intelligent Strategy Of Generating Papers

With the popularization of internet,education informationization has become a new topic in the process of modern education reform.The traditional teaching mode can not fully meet the needs of learners and teachers,so the full development and use of online teaching is a inevitable trend.Online homework and testing system is an important part of network-education.It relies on two effective teaching evaluation methods: homework and examination.On the one hand it avoids plagiarism phenomenon in the traditional mode and achieves operations' verification to improve its reference value for the teaching by providing more meaningful guiding strategy;on the other hand,it overcomes the subjectivity of the examination proposition and gives objective and reasonable evaluation of contents that the students master.This dissertation designs and develops an online homework and testing system by doing in-depth study of the existing homework,system's frameworks and key technologies as well as considering the actual situation of communication electronic circuit teaching and demand.Students can not only use the platform to do on-line training about the contents of the chapters,but also generate charpter operations in accordance with the requirements of teachers,while the system has a phase-test function.The system includes seven modules,such as logout?online training? question bank management?homework management? test paper generation and result inquiry.Based on the requirement of the module,the paper expatiates on the design and implementation method of the modules and studies the algorithm of generating test papers.It is an important foundation for the development of online homework and testing system to build a high-quality,distinctive and hierarchical mass question bank management.The algorithm for generating testing paper is the key technology to ensure the examination system can accurately reflect the students' comprehensive quality.After analyzing the advantages and disadvantages of existing algorithms and demands of the system,the dissertation chooses an improved stochastic algorithm,which is based on knowledge points and difficulty and realized by php programming.It has a good effect of test paper generation for characteristics of small amount and low difficulty of questions.While Genetic algorithm is used to improve the problem of large amount,high difficulty and low success rate of the test paper generation.At the same time,it will be used in the stage test,by improving the coverage of knowledge points to guide students to learn.The scientific and rationality of algorithm is verified by a large number of test paper generation.The results show that the online homework and test system based on Apache + Mysql + PHP are user friendly,flexible and convenient to use.It has good expansibility and security.A large number of test paper generation verify the scientific and rationality of algorithm.The results show that the system can meet the different requirements of test paper generation,and realize the expected functions of online homework and test system.It can help students to learn,and assist teachers in classroom teaching.It can help to implement the separation of teaching and examination.