基于LDA和SNA的应急物流研究主题可视化研究OACSTPCD

Emergency logistics is a lifeline link that effectively responds to incidents and challenges and en-sures the safety of people's lives and property.Taking CNKI's core database literature as the research object,we first explore the research topics of domestic emergency logistics based on the LDA theme model,and on this basis,clarifie the evolution path of emergency logistics with the help of social network analysis tools.The results show that from the perspective of research themes,China's emergency logistics research mainly includes four major research topics as emergency logistics system construction,emergency logistics model and algorithm,emergency logistics management,and emergency material support.From the perspective of theme evolution path,the evolution of e-mergency logistics in China can be roughly divided into three stages.The first stage is from 2003 to 2007 in regard to hasic research;the second stage is from 2008 to 2017,with model construction,algorithm solving and optimiza-tion as the main research contents.In the third phase,from 2018 to the present,the number of literatures focusing on digital technology-enabled emergency logistics in the context of major emergencies has increased significantly.This study is helpful to clarify the current status of the research system of emergency logistics and its evolution process,and provide useful reference for future research.