Identification of critical factors in chemical accidents based on text mining and improved DEMATEL method
To draw lessons from historical chemical accidents and guide the practice of chemical safety production management,a method for identifying critical factors in chemical accidents based on text mining and improved DEMATEL method was proposed.Firstly,text mining technology was used to fully mine the text information of 1 627 chemical accident investigation reports,based on which 14 chemical accident influencing factors were extracted according to related literature,laws and regulations.Then,the fuzzy DEMATEL method based on alpha-level sets was used to calculate the performance levels of the factors affecting chemical accidents.Finally,the correlations between critical factors and other factors were analyzed and the mechanism of chemical accidents was revealed.The results show that 8 chemical accident influencing factors are identified as the critical factors,i.e.,extreme weather,regulations,technical procedures,hidden danger investigation,risk control,education and training,supervision and management,and operation management.These 8 critical factors have direct impact on the influence factors such as facilities and equipment,material reactions,occupational quality,job responsibilities,emergency management,and safety investment,which eventually lead to chemical accidents.
text miningdecision-making trial and evaluation laboratory(DEMATEL)chemical accidentcritical factors identificationalpha-level sets
NETL
NSTL
万方数据
