| Academic level test is an evaluation method to verify whether a student has re ached a given teaching goal.However,the current academic level test only stays in the form of paper-based tests,lacks refined evaluation feedback.The test overemphas ized on the screening and selection of examinations.lt's difficult for teachers to con duct a detailed analysis of each student's evaluation results.Therefore,it is difficult to carry out compensatory teaching in a targeted manner.Students can't quickly locat e their own knowledge defects and take remedial learning blindly.With the continuo us improvement of the academic diagnostic system,academic diagnosis pay more at tention to the student's learning process,emphasizing the depth of the test data min ing.Thereby,it helps teachers understand the overall cognitive level of students,fin ds out the shortcomings of teaching in a timely manner and conducts compensatory teaching in a targeted manner.The main content of this study includes three aspects:the knowledge structure representation,the construction of the diagnostic model and the design and develop ment of the academic diagnosis system.Its main content is as follows:(1)Characterization of knowledge structure.The representation of knowledge st ructure can express the modular and structural characteristics of subject knowledge.Academic diagnosis can be regarded as the process of discrepancy between subject knowledge structure and student knowledge structure,which is mainly reflected in t he difference between the network level of knowledge structure and the number of knowledge points.Therefore,the disciplinary knowledge structure should be firstly ch aracterized to diagnose the learner's cognitive level.Combining knowledge representat ion methods of concept maps,this paper uses multi-way tree to represent discipline knowledge structure.Simultaneously,In this paper,the multidisciplinary tree is used to represent the subject knowledge structure.At the same time,the students' interna I knowledge structure is diagnosed by using questions,and the weak points of the learner's knowledge points are reflected by the difference between them,and analyz e learners' knowledge defects accurately.(2)Diagnostic model construction.This study constructs a knowledge point diagn osis model,which is mainly used to solve the characterization problems of the subj ect knowledge structure and the problem diagnosis of students' knowledge structure defects.The idea of building this model is based on the diagnostic process of "kno wledge points-examinations-test papers".Firstly,mark attributes of test questions,me ta-knowledge points and incorrect questions and mine the hidden information contai ned in the academic level test,such as the overall level of knowledge of the stude nts' knowledge and individual knowledge structure,so as to reflect their cognitive 1 evel and learning status.(3)Design and development of academic diagnostic systems.Based on the knowl edge diagnosis model constructed,taking junior middle school mathematics as an ex ample,this paper translate the concept of the knowledge of mathematics and hierar chical structure relations into the data properties that can be stored in the computer so as to make correlation mapping between questions and knowledge points and u se UML modeling technology to analyze the operation process of the system using objects,analyze the use cases of each module and complete the system of demand analysis and overall design.Through the JavaEE development language and the SSM framework,the paper realize the prototype development of the academic diagnosis system based on knowledge points.A functional and compatible user test was perfor med on the prototype.The test results show that the system is stable and the syste m function meets the needs of teaching applications,and can achieve the desired di agnostic effect. |
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