The Open Source Platform Design And Implementation, Based On B / S Structure Of The Examination System

With the development and popularization of Internet technology, far-distance education based on Internet has been considered one of the the directions of the education' s development in the future. Exam evaluation is an important research field of it.Basing on the situation and features of the present exam system in our country and considering the coding experiences of the present exam system, the passage designed and realized the online exam system, which is based on the Internet environment and the WIN2000 operation system. The system also has the functions of managing network test paper' s storehouse, composing test papers, taking exams on the Internet, testing online, valuing immediately and analyzing similar papers, the system has applied in the operation examination of DE ZHOU NATIONAL REVENUE,According to the computer exam with high standard, large scale and high efficiency, the passage firstly compares popular enterprise applying system J2EE and NET and the open source platform(Apache+MySQL)in detail(the third chapter), and then gives the concrete design plan(the fourth chapter) and the Algorithm (the fifth chapter)of exam system ;in the sixth chapter , it gives some algorithm procedures of some important modes. At the end of the passage it gives the application introduction and give some analysis and improvement according to the certain weakness. During the design and realization of the exam system and according to some weakness of present exam system, the passage gives some new opinions and supposition.1. Considering the cost and the system' s spread, the author employs the open source platform combination ( Apache+MySQL) which is popular in our country now, as system platform, and at the same time it uses free PHP as developing tool.2. in the module of the test paper' s composite , the system implement a kind of intelligent composite strategy which is based on the composite parameters .3. in the valuation of the test papers, the system uses two different methods to value the different types of the test question. For the. objective questions such as multiple choice questions and judge questions, it uses automatic way; for subjective questions such as simple answering questions, it uses the online way.4. According to the features of blank questions, the system gives the opinion of building synonym storehouse to evaluate the answer automatically, and it is mostly efficient.5. Considering the phenomenon of plagiarize in the simple answering questions, the system designs and realizes the testing mode, which can find the similar test paper automatically and give the resultto teachers.With the rapid development of Internet, Internet education has been carried out. Online exam system is a component of building Internet course. The system can be implemented and developed into far-distance exam system. So it is worth being popularized.