Design of Interactive evaluation system for college students' psychological education based on improved KNN algorithm

Abstract

Abstract Based on the research and investigation of the psycho-educational development and assessment of college students, this paper designs an interactive system for automatic evaluation of the psychoeducation of college students, which is based on the KNN data classification model and the current technical and environmental conditions. Based on the data and personal information of a college student's psychological census, screen the students' psychological evaluation data, analyzes the key information of the data, obtains the association rules of each factor, analyzes the experimental results. Aiming at the problem that KNN algorithm has low classification accuracy on unbalanced data, we proposes a weighted KNN hybrid algorithm. The harmonic weighted KNN classifier is added to the SVM-KNN classifier for fitting, and the SVM-KNN hybrid algorithm is jointly established. Combined with the principle of SVM-KNN hybrid data classifier, the improved algorithm is applied to a wider range of data value areas, and the appropriate algorithm is selected for data classification and prediction by judging the threshold size. For the data classification calculation method, the Euclidean distance calculation method is generally used to calculate the point-to-point distance in the plane coordinate system, as for hyper plane high-dimensional data, the improved algorithm uses a more suitable kernel function calculation method. According to the designed experimental step program, a series of basic performance such as the calculation rate of the algorithm and the system are tested, and the results show that it can be satisfied, which proves that the interactive automatic evaluation system of College Students' psychological education designed in this paper can effectively understand the psychological status of college students at this stage, find the students who need to focus on psychological counseling, and carry out psychological health education, so as to provide reference for the actual college students' psychological health education.