Design And Implementation Of The Online Practising System Based On Test Papers' Intelligent Generation

"Internet + Education" has brought new educational concepts and methods to teachers and improved teaching efficiency.At present,the application of online system of test papers' generation and practice has become a hotspot in the research of teaching innovation based on internet technology.With the help of this kind of systems,test papers with objectivity,credibility,comprehensiveness and certain difficulty can be generated quickly.In addition,teachers can quickly understand students' mastering of knowledge by data of students' feedback,adjust the teaching plan in time and realize differentiated push of test papers and teaching concept of“teaching students according to their aptitude”.Therefore,this research will promote teaching positively.This paper first explains the background,purpose,significance and status of algorithm of test papers' intelligent generation at home and abroad and then compares two main theories of educational measurement.This paper uses the classical theory of educational measurement to study the algorithm of test papers' intelligent generation.After completing the analysis of basic attributes of questions and evaluation criteria of quality of test papers,this paper constructs a mathematical model and an objective function of questions of algorithm of test papers' intelligent generation.On this basis,the design of algorithm of test papers' intelligent generation based on genetic algorithm is completed.In the process of designing the algorithm of test papers' intelligent generation,considering premature convergence and convergence to the local optimal solution in the traditional genetic algorithm,this paper improves the algorithm by adopting the method of cross-probability and mutation probability adaptive adjustment.Satisfactory results have been achieved.Based on a large number of research,this paper completes the analysis of requirements of the online practising system based on test papers' intelligent generation,and introduces the function design and database design of key functional modules in the system.Finally,this paper tests the system and analyzes the results.