SVM classification model in depression recognition based on mutation PSO parameter optimization

¹ Beijing Advanced Innovation Center for Future Internet Technology, Beijing University of Technology, Beijing, China
² Laboratory of Intelligent Science & Technology, International WIC Institute, Beijing University of Technology, Beijing, China
³ Beijing International Collaboration Base on Brain Informatics and Wisdom Services, Beijing, China
⁴ Beijing Key Laboratory of MRI and Brain Informatics, Beijing, China
⁵ Beijing Anding Hospital, Capital Medical University, Beijing, China
⁶ Beijing Key Laboratory for Mental Disorders, Beijing, China
⁷ Department of Life Science and Informatics, Maebashi Institute of Technology, Maebashi, Japan

^a Corresponding author: limi@bjut.edu.cn

Abstract

At present, the clinical diagnosis of depression is mainly through structured interviews by psychiatrists, which is lack of objective diagnostic methods, so it causes the higher rate of misdiagnosis. In this paper, a method of depression recognition based on SVM and particle swarm optimization algorithm mutation is proposed. To address on the problem that particle swarm optimization (PSO) algorithm easily trap in local optima, we propose a feedback mutation PSO algorithm (FBPSO) to balance the local search and global exploration ability, so that the parameters of the classification model is optimal. We compared different PSO mutation algorithms about classification accuracy for depression, and found the classification accuracy of support vector machine (SVM) classifier based on feedback mutation PSO algorithm is the highest. Our study promotes important reference value for establishing auxiliary diagnostic used in depression recognition of clinical diagnosis.