Crowd evacuation prediction and influencing factors analysis based on random forest
In order to quickly predict the expected goals of crowd evacuation and analyze the relationship between the expec-ted goals and various influencing factors,a prediction model based on the combination of evacuation simulation and random forest was proposed.Firstly,a three-dimensional model of crowd evacuation was constructed.Secondly,the key factors affecting evacuation were analyzed.Finally,a prediction model based on random forest was constructed,and the importance analysis of the prediction variables was carried out.The results show that this method can quickly predict the expected goals with a pre-diction accuracy of 94%.Based on the importance analysis of variables,it is found that the number of personnel has a signifi-cant impact on evacuation,and the presence of small groups also has significant influence on evacuation.The research results can provide some reference for the safety evacuation assessment of crowd.