摘要：

Abstract:

【Purpose/significance】Using the method of permutation entropy to study the problem of sudden change warning in emer⁃

gencies, we aim to better discover the evolution laws of emergencies from a multi factor perspective, achieve pre prediction and warn⁃

ing of emergencies, and achieve the effect of minimizing risk losses.【Method/process】Under the guidance of mutation theory, the

method of permutation entropy is used to quantitatively monitor multiple risk factors of sudden events, identify commonalities from per⁃

sonalities, discover critical values of sudden event mutations, and verify the feasibility and scientificity of the method through specific

cases.【Result/conclusion】The calculation results indicate that the method proposed in this article can effectively respond to sudden

changes in emergency warning, providing reference for pre prediction and early warning work of unexpected events.【Innovation/limita⁃

tion】In terms of research methods, there is still room for further optimization of the permutation entropy method currently used. At the

same time, research on multi-source heterogeneous data of emergencies will be further deepened, to build an intelligence sharing plat⁃

form, empower intelligence with big data technology, and improve emergency management work.