A chemical accident cause text mining method based on improved accident triangle.

"Declarations Ethics approval and consent to participateThis study has passed the ethical review of the Ethics Review Committee of The Chinese Center for Disease Control and Prevention, and the respondents were informed and they consented. The Ethics Review Committee of the China Center for Disease Control and Prevention approved all experimental protocols in this study. All methods of this study were performed following relevant guidelines and regulations. All the participants provided written informed consent, and their participation was voluntary and confdential. Data handling and storage are compatible with this law. All protocols were performed under the Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding The work is funded by the Natural Science Foundation of China (Project Code: 51674193) and the Key R&D Project in Ningxia Hui Autonomous Region (Project Code: 2022BEE02001)."