Study On Design And Applications Of E-learning Examination System

Automatic marking the examination question bank construction, online intelligent and subjective questions is the current E-Learning(online learning) three core issues test link. In this paper, through the analysis of the actual needs of online examination system, the basis of the analysis and the online examination system application architecture and development technology and the characteristics of system, the design and implementation of a E-Learning online examination system, improve the actual effectiveness of online examination link.The main contribution of this paper includes:In the construction of test bank is mainly considering the future result evaluation problem, used for each question labels have been adjusted and increased test questions in many dimensions, and then to the future through the examination results assessment of students' knowledge and ability evaluation more accurate vulnerability.In the aspect of intelligent test paper composition problem, through comparison of different algorithms, improved genetic algorithm is adopted to realize the reasonable of the online intelligent, has realized the intelligent algorithm genetic algorithm. System for the individual subject experiment, through the analysis of the experimental results, intelligent test paper generation system by genetic algorithm is designed to meet the basic needs of.In the aspect of subjective questions scoring problem questions, through segment annotation keywords on the standard answer, using the key words fuzzy matching method, according to the agreement of student answers and standard answer the extent of the exam papers are tested using a minimum edit distance algorithm to realize the automatic marking of subjective questions. The simple answer to the liberal arts experimental system of individual subjects, through the analysis of experimental results, basically meet the system design requirements.On this basis, the development of online examination system based on B/S architecture, the development environment and SQL Server2008 as the backstage database with ASP.NET, realizes the management, automatic test paper, automatic marking, performance management and other functions. For example exam by combining with the actual environment and demand results show the robustness and efficiency of the system, the system has been successfully applied to the Internet operation in practice.