In order to accurately predict the risk level of coal mine gas explosion accidents. based on the feature vector in line with the actual situation. the particle swarm optimization probabilistic neural network (RWPSO-PNN) is improved to realize the prediction model of gas explosion risk level. Firstly. https://www.remtavares.com/limited-find-Interstella-Sequin-Long-Sleeve-Mini-Dress-Black-huge-savings/