1results about How to "Improve heterogeneity" patented technology

This invention discloses a road safety analysis method and system for eliminating heterogeneity in traffic accident samples, relating to the field of road safety technology. Specifically, firstly, accidents are clustered according to their occurrence characteristics, forming groups with different attribute characteristics. Then, based on the safety influencing factors of the accidents, traffic safety models are performed on different groups. A safety analysis model is applied to obtain the influencing factors of traffic road safety in the affected area, and a safety evaluation of the area is conducted. Through the technical solution of this invention, a precise, comprehensive, objective, and truthful road safety evaluation method that reflects the impact data is provided, with a wider range of applications. In particular, clustering based on accident characteristics can amplify the heterogeneity between accident samples, better characterizing the impact of the same influencing factors on different accident groups.