Physical Health Test Analysis Based On Decision Tree For Secondary Vocational Students

In recent years,as the country attaches great importance to vocational education and increasing capital investment,the enrollment rate of secondary vocational colleges is on the rise.These are all students who graduated from junior high school.They are at a critical period of healthy physical and mental development.Functions in all aspects should gradually improve with age.However,the decline in the physical quality of students is significant,and more and more students have shown characteristics such as obesity,myopia,and weakened physical fitness.This must arouse enough attention from us,find out the reasons,and seek ways to improve the students' physical health.It has important practical significance for the reform of the physical education in secondary vocational schools in China and the overall improvement of students' quality.This paper takes the student's physical health test results of Gu Yuan City National Vocational and Technical College as the test data,applies the data mining technology to the analysis of physical health test results of secondary vocational students,and explores the factors affecting the physical health test scores and analyzes them.Firstly,the related technologies of data mining and decision tree are introduced,and the theory and method basis are provided for the research content.Secondly,the key research and analysis of the ID3 algorithm in the decision tree was carried out.The advantages,disadvantages,and basic ideas of the ID3 algorithm are analyzed.The algorithm uses the attribute with the highest information gain as the criteria for splitting.In this paper,the ID3 algorithm will be improved.The amount of calculation of the attribute information gain is reduced.The ID3 algorithm is simplified.Thus a decision tree is quickly generated.Finally,we use the improved ID3 algorithm to study the physical health test results of the students in Gu Yuan City National Vocational and Technical College.The biggest factor in the analysis of lung capacity is running.The students can improve their test scores of lung capacity through running training.In addition,the factors that affect physical health test results are analyzed.That is,the passing rate of boys' test scores is higher than that of girls.The pass rate of the students of normal weight is higher than that of the students of abnormal weight.The pass rate of students who are taller or smaller is lower than that of students aged between 17 and 19.These hidden factors provide services for physical education in secondary vocational colleges.Teachers will improve their teaching strategies according to the analysis results and carry out targeted training.This will make greater contributions to enhancing the physical health of students.