Design And Development Of Analysis Tool For Teacher-student Interaction In Online Course Forum

The course forum is an important channel for online teacher-student interaction with open courses,and related measurement and evaluation has also become a hot spot for online education data analysis and research.The current forum analysis indicators used for course evaluation include the total number of posts and the total number of participants.Through preliminary analysis of the forum data of an online learning platform,the author found that not only the absolute values of the interactive indicators of the courses and forums in different disciplines are quite different,but also the forum interaction patterns of different courses in the same discipline.Therefore,in the teaching analysis and research work of the course forum,it is necessary to carry out the normalized relative analysis of the courses of the same subject type and identify the teacher-student interaction mode of different online course forums.This article designs and implements an online course forum teacher-student interactive behavior analysis tool system.In order to achieve a comparative analysis of course forums of the same subject type,this article uses web crawling technology to obtain the forum data of multiple online courses in the specified subject;in order to distinguish and identify the online forum teacher-student interaction mode,this article proposes three sets of vectors: overall behavior vector,post interaction progress vector,and teacher-student interaction vector.Through these three sets of vectors,the behaviors of students in the forum are described.Based on these two key technologies,this article provides three functional modules: forum interaction mode analysis,forum activity analysis,and forum comparative analysis.The forum interaction mode analysis module performs cluster analysis and behavior similarity calculation on the results of student digital portraits,and distinguishes the forum into a learning task-driven and self-learning forum.The forum activity analysis module proposes different evaluation methods for student participation,activity and other indicators for the two modes of forum.The forum comparative analysis module selects the same subject type as the forum to be evaluated,crawls the forum data of the same subject with the highest number of subjects selected,calculates multi-dimensional teacher and learner forum interaction indicators,and uses radar charts to visualize the analysis results.The unit test results for forum data acquisition and student portraits show that the system can complete the online course forum web page data acquisition in a relatively short time,and the proposed student behavior vectors can represent the overall characteristics of different forums.In the integration test,this article selects mathematics and political theory courses as the evaluation targets,and crawls the top 11 courses on an online education platform for testing.Randomly selected a course in these two disciplines to carry out the test of forum activity analysis and forum comparative analysis function.The research work in this article can provide some suggestions for the evaluation of the interactive situation of the online course forum.