The Design And Realization Of Intellectual Test Paper Composition System

With the progress of the education teaching modernization and standardization, as well asthe rapid development of computer application technology, establish an intelligent test papercomposition system has become one of the important means of realizing the computerassisted instruction and computer aided testing. The algorithm of test paper composition andthe design of question database structure as two core technology of the test paper compositionsystem, has become the key content of the research.Frist，according to the measurement target of the classic educational measurementtheory,desigend properties of question and the structure of the test database. Specifically forthe test paper system does not solve the questions of knowledge point scores distributedcomputing problems,Special design on the properties of questions of knowledge points to theincrease of the main points in the design of the item attributes, secondary knowledge, as wellas knowledge from the test score the proportion of the share of four properties to ensure thatthe test paper process distributed computing, knowledge point score is more accurate.Traditional simple genetic algorithm due to the choice of genetic operators and the designof the fitness function, often premature convergence in the implementation process and cannot find the global optimal solution of the phenomenon.In the application of geneticalgorithms,has optimizated and transformaed the encoding scheme, fitness function andgenetic operators such as the above-mentioned problems of simple genetic algorithm, use thesegment natural numbers encoding,adaptive crossover probability and mutation probability,put forward an improved genetic algorithm Test Paper composition scheme.Based on the question database structure above, apply the improved genetic algorithmdesign and implement an intelligent test paper composition system based on J2EE platform.This system mainly include user management, the question database management, the papercomposition management and the test paper management, can perform the practical needs ofthe automatic test paper composition in different subject exam.